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Arctic Death Spiral and the Methane Time Bomb

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    Last Chance Films
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    In association with
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    Event Horizon Productions
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    Presents
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    ARCTIC DEATH SPIRAL
    AND THE METHANE TIME BOMB
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    Emergency Broadcast System
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    We interrupt our programming.
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    THIS IS A NATIONAL EMERGENCY.
    Important details will follow.
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    The emergency alert "system" has been activated.
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    Ladies and gentleman.
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    The very word secrecy is repugnant,
    in a free and open society.
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    We decided long ago,
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    that the dangers of excessive and unwarranted
    concealment of pertinent facts
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    far outweigh the dangers
    which are cited to justify it.
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    But I am asking your help,
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    in the tremendous task
    of informing and alerting the American people.
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    For I have complete confidence, in
    the response and dedication of our citizens.
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    Whenever they are fully informed.
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    Many rivers and the air in many cities,
    remain badly polluted.
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    And our citizens, suffer,
    from breathing that air.
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    We lived with conditions like these
    for many many years.
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    But much that we once accepted as inevitable,
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    we now find absolutely intolerable.
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    Each of us all across this great land
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    has a stake in maintaining
    and improving environmental quality,
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    clean air and clean waters,
    the wise use of our lands,
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    the protection of wildlife and
    natural beauty, parks for all to enjoy.
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    These are part of the birthright of every American.
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    To guarantee that birthright,
    we must act, and act decisively.
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    It is literally now, or never.
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    Our program will emphasize conservation.
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    The amount of energy being wasted,
    which could be saved,
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    is greater than the total energy
    that we are importing from foreign countries.
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    We will also stress development
    of our rich coal reserves.
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    In an environmentally sound way.
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    Now it seems to me that if, we would concentrate
    on resolving the problems,
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    uh... of the automobile, the combustion engine,
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    thee, the pollution factor
    and we've gone a long way in that,
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    I think of myself as an environmentalist.
    I uh...
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    I don't wanna see all this beauty
    around us wiped out and destroyed.
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    We all know that human activities
    are changing the atmosphere
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    in unexpected, and in unprecedented ways.
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    I recommend that we adopt a BTU tax
    on the heat content of energy,
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    as the best way to provide us
    with revenue to lower the deficit,
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    because it also combats pollution,
    promotes energy efficiency,
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    promotes the independence
    economically of this country,
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    as well as helping to reduce the debt.
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    And it is environmentally responsible.
    It will help us in the future,
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    as well as in the present with the deficit.
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    The United States is committed
    to strengthening our energy security
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    and confronting global climate change.
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    And the best way to meet these goals is for
    America to continue leading the way
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    toward the development of cleaner,
    and more energy efficient technology.
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    We're gonna leave this planet...
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    At least as good as the, planet we inherited,
    from our parents
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    but, we've got... we've got a
    bigger problem with climate change.
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    We sent, we sent a billion dollars to foreign nations,
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    many of them hostile, and in the...
    because of our addiction to oil,
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    and in the bargain
    we're melting the polar ice caps.
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    Changing the weather patterns
    all around the globe...
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    The science is clear that man-made emissions
    of air pollution and global warming gases
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    are changing our atmosphere.
    - Anthropogenic global warming is still an issue
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    that the scientists are still debating
    and you know it and I know it.
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    The debate on the causes of Climate Change
    are far from settled.
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    Well the climate's always changing.
    That's not the fundamental question.
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    The fundamental question is whether man-made
    activity, is the, is what's contributing most...
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    I think CO2 Is a problem, and therefore
    I don't think it needs to be regulated.
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    We all breathe CO2, climate changes,
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    but there's no evidence at all that it's man-made
    CO2 that causes the climate to change.
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    The idea of human induced global climate change is...
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    one of the greatest hoaxes perpetrated
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    out of the scientific community.
    It is a hoax.
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    I'm only concerned about the,
    incredible frenzy and hype
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    for something that's a total myth.
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    It's AMAZING to me how aaah,
    upset so many people are...
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    The existence of all these billions of people
    on earth, have all influenced the climate of earth.
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    but NONE of it, is of significance, uhh...
    and thank goodness,
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    things are doing just fine.
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    The question is the degree to which man influences
    the climate and whether actually we can...
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    ...this is anything we should worry about
    or whether we should be...
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    bombing the global economy into the
    dark ages to try and stop it.
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    Ya know, the greatest hoax
    I think has been around,
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    in many many years,
    if not hundreds of years
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    has been this hoax on the environment
    and global warming.
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    You notice they don't call it global warming
    anymore.
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    No no no. It's because it's getting cooler!
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    It's "Weather Control".
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    Yeah! It's getting cooler, you can't call
    it global warming anymore.
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    So what we need, what the world needs is more
    fossil fuels.
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    The evidence we have, is not just that fossil
    fuels aren't ruining our planet.
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    They're making it much better...
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    Climate related deaths are going down.
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    And, so, what we need is many many
    more fossil fuels.
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    So that people can eat.
    And they can have food.
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    Through the years of high school,
    "Aqua Net" hair spray use have done
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    more damage to the ozone
    than any global warming scam has.
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    Aqua. I remember Aqua Net.
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    Aqua Net.
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    (Laughter)
    Every every, every.
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    I remember Brill creme.
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    But I don't think that had anything to do
    with the climate change.
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    "A little dab'll do ya" Remember that?
    That's it!
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    There´s more!
    The CO2 can also go...
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    (Crazy Gestures & Comic Sounds)
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    At times when CO2 was rich in the atmosphere,
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    there was... greater growth of farms, vineyards
    and so forth.
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    Uh, I guess in England,
    there was a time when
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    growth of vineyards was so great
    there was this wine all over the place and...
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    But I'm still open to the possibility. So
    if there's anyone from Exxon-Mobile here...
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    I've got a bank account and routing number
    available for you. (Laughter)
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    One could argue from an economic point-of-view...
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    We should be burning fossil-fuels like "Gangbusters"
    to generate as much wealth as we can.
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    Divert some of that into alternative energy research
    and we might get to those alternative energies
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    faster, than if we...
    starve poor people
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    and ruin the world's economies,
    and reduce CO2 emissions.
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    (Applause)
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    Now, as we agreed, you owe me two beers.
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    (Laughter)
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    "Scientific American" editorialized on the
    escalating ugliness of climate denier tactics and rhetoric.
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    The editors wondered if we are a people
    increasingly estranged from critical thinking,
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    divorced from logic,
    alienated from objective truth.
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    Now to the big headline from
    "Climate Scientists" tonight.
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    The UN International Panel on Climate Change
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    says we are hurdling toward the day when
    Climate Change could be irreversible,
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    with catastrophic consequences they say.
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    It's only going to get worse if we don't take
    drastic measures.
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    We've seen an increasing number of regions
    over the decades, starting to lose ice,
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    but this is the first time we've seen it
    ALMOST globally.
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    Most ominously, the report says
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    we are in REAL danger of
    exceeding our carbon limit of one-trillion tons.
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    Scientists say that would warm the earth more
    than three and a half degrees Fahrenheit,
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    making the impacts of climate change
    MUCH more dangerous...
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    And that's the worry.
    Many of the worlds cities are in the crosshairs.
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    Most of the people around the world
    live in coastal areas,
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    it's where most of your major cities are
    because that's where ports are.
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    And they are at sea level.
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    So even small changes in sea level rise can
    displace millions of people.
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    Scientists fly over a giant chunk of Antarctic
    ice as it cracks and collapses.
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    The chunk is enormous.
    About seven times the size of Manhattan
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    160 Square Miles.
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    It was part of the Wilkins Ice shelf.
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    The biggest on Antarctica yet, scientists
    say to fall victim to Global Warming.
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    Watching Wilkins ice shelf disappear at the moment,
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    we learn a lot more about
    how Ice responds to climate change.
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    The Ice is just a small fraction of the
    Antarctic ice sheet.
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    But it broke off well before scientists predicted.
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    A sign they said that Climate Change may be
    happening faster than expected.
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    One expert told us last year:
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    "I think what we, what we do know is that
    ice, uhh, uh, is probably our best sensor,
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    of these large scale changes taking place.
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    And in many ways I think we're in
    unchartered territory."
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    Ice plays a vital role in cooling the Earth's
    temperature and regulating sea levels.
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    As it´s lost, the planet gets warmer,
    sea levels rise and more ice is threatened.
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    A vicious environmental circle.
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    There are glaciologists now
    who are getting very worried.
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    But they haven't really come out
    and said what they think.
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    Take a good look at it,
    because it won't be there for long.
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    It's cracking and it's breaking up.
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    And it's only one of dozens
    of Antarctic ice shelves
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    collapsing faster than anyone predicted.
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    I would say the vast majority of we we're
    looking at back there is broken up this year.
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    It was a cool summer right? Chicago, New York,
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    places like that, so.
    How could it be Global Warming?
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    This is how.
    Look at the context.
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    These blue dots over North America represent
    below average temperatures
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    for the Summer... June, July, August.
    What we call "Climate Logical Summer".
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    But look at the context. They're lost in a sea of red dots across much of the rest of the globe.
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    Just a couple other blue dots here and there.
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    Those red dots are above-average temperatures.
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    What that translates to in terms of a ranking
    for this summer and for August
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    globally, second warmest on record. Period of record going back a little more than a century.
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    June through August globally.
    The third warmest on record.
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    The oceans which had cooled for a couple years
    now recovered with a vengeance.
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    August the warmest on record. June through August also the warmest on record.
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    Now, if the scientists are anywhere near correct,
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    then this is the greatest challenge
    facing humanity today.
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    It is the greatest challenge
    humanity has ever faced,
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    and probably WILL ever face.
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    If someone asks me,
    if the climate system were changing.
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    I would say, look at the data.
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    The Arctic is, is experiencing, uh..
    I would say a crisis.
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    The meltdown is changing long held beliefs
    about the Arctic and it's weather patterns.
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    As well as being blamed for
    affecting conditions around the globe
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    and triggering a rise in global sea levels.
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    From all these collective studies of the whole
    Arctic region,
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    you can see that it's warming much faster
    than the rest of the planet.
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    In 2012, we had the new record set
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    in terms of melting
    over the Greenland ice sheet.
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    But here, amid this snow and ice
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    It's hard to believe that the ice sheet is
    melting as fast as scientists say.
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    But it is.
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    Scientists say, we are watching the polar
    regions melt right before our eyes.
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    So you can tell, there's a stream, here.
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    And then there's a bunch of flow
    coming down on this right side.
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    Interpreting the info that comes from satellites
    called "The Gravity Recovery And Climate Experiment".
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    In science circles, it's called "GRACE".
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    "GRACE" can detect the most subtle minute
    changes in land ice,
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    down to the width of a human hair.
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    The faster speeds that we're seeing uhh...
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    In Greenland are not going to slow down.
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    That's not the way, uh, ice sheets behave.
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    Ooohohohooooo!
    Aaaaaah!
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    Ouch! Oh my God!
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    "Here comes the water...
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    Uh ohoo."
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    "Look at that."
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    "ohoo, ohoo..."
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    Woooooow!
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    So how big, was this calving event that we
    just looked at?
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    We'll resort to some illustrations again to
    give you a sense of scale.
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    It's as if the entire lower tip of Manhattan
    broke off.
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    Except that...
    the thickness, the height of it
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    Is equivalent to buildings that are two and
    a half or three times higher than they are.
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    That's a magical, miraculous
    horrible, scary thing
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    I don't know that anybody's really seen the
    miracle and horror of that.
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    It took a hundred years for it to retreat
    eight miles, from 1900 to 2000.
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    From 2000 to 2010, it retreated nine miles.
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    So in ten years, it retreated more than it
    had in the previous one-hundred.
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    First of all, we're going to look at the
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    runaway behavior, that is actually happening,
    to the Arctic system.
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    Going almost exponential.
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    We saw the rate of change of ice area, accelerating.
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    We saw the change in ice mass, or thickness
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    also accelerating and moving towards zero,
    over the next two or three years.
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    And taken all together,
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    we have the unmistakable footprint of a system
    in, what we call, self-amplification
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    or, "Runaway Behavior".
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    Uhh, you may remember that in 2007,
    there was a, uh,
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    a big study that came out
    from this group called
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    "The Intergovernmental Panel on Climate Change".
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    And, they looked at computer models of how
    rapidly Arctic ice would go away.
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    And, as of early 2007,
    this is what they were telling us.
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    That, aahm...
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    We would see, gradual drop in Arctic... ice minimum.
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    going down to where we probably still have
    a fair amount of ice left in the year 2100.
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    Worst case, maybe by 2070,
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    we would see open water, in the Arctic,
    in the Summertime.
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    That very same year,
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    we saw, in the actual observations, a
    huge drop in the Arctic ice.
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    And, that drop has continued so that in 2012,
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    this is now where we are.
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    So we're something like fifty years ahead
    of the worst case scenarios,
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    that the scientists were giving us
    just five years ago with Arctic Ice.
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    I'm actually in agreement with many climate
    change deniers, in that the IPCC is wrong.
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    But I think, they're actually wrong, because
    they're too conservative.
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    And they haven't really been telling the story
    of what really could happen...
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    Can you summarize the effect
    of an ice-free Arctic on the world.
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    Yes, the effect of an ice-free Arctic on the
    world is a very large one,
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    because it goes way beyond the Arctic itself.
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    Because once thee sea ice has disappeared,
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    firstly, that produces a decrease
    in the global albedo,
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    the amount of radiation reflected by the earth.
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    And has a knock-on effect in the sense that
    the warmer air masses in the Arctic in summer,
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    cause a retreat of the snowline,
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    and the snow-line decrease has just as big
    an effect on the albedo as the sea ice decrease has.
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    So as global albedo change, which affects
    thee temperature of thee entire planet,
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    it warms it all up.
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    Uh, and then, there's the fact
    that as the sea ice retreats
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    it allows the water masses around
    the shelves of the Arctic to warm up.
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    And that warms up the seabed and releases
    more Methane from the sub-sea permafrost
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    which is melting away.
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    And, that methane itself
    is a very very powerful greenhouse gas.
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    So we're having a methane kick, uh,
    coming in from the retreat of the sea ice,
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    which again, is a global effect rather than
    simply an Arctic effect.
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    When the IPCC is uh...
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    It's not a whole load of people agreeing.
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    It's a load of people saying, oh, it's this,
    it's this, it's this.
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    It's just that, nearly, everybody thinks that
    we are warming the planet,
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    they, disagree about how fast it'll happen.
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    They disagree about whether negative or positive
    feedbacks are going to be more important.
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    This is one of the more conservative scientific
    bodies on the planet. They work by consensus,
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    and, after the scientists reach consensus...
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    they then, vet they're report through the
    political process.
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    So politicians have to sign off on the IPCC's
    assessment before it's released.
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    And they conclude that, that we've reached
    "Runaway",
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    in the absence of Geo-engineering.
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    And, this is not in the model.
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    The models don't show this happening.
    This IS happening.
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    So what happens when we update the models,
    so that it does reflect that the Arctic is melting?
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    So we're seeing effects.
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    And, one of thee primary effects, that, uh...
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    grabs most peoples attention is
    what's happening with the Arctic sea ice,
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    the ice that's floating on the Arctic ocean,
    that covers usually most of the Arctic Ocean.
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    Last year 2012 was the record low as lowest,
    Arctic summer ice that we have seen
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    ever since we've been observing it.
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    Whereas the rest of the globe has cooled,
    since 1997,
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    temperature in the Arctic has started to increase
    and increase, increasingly rapidly.
  • 24:44 - 24:48
    The hotter it gets, the faster it gets hotter.
  • 24:48 - 24:54
    2007 alone, in one year, it melted more in
    the previous year
  • 24:54 - 24:58
    by an area equal to
    three times the size of California.
  • 24:58 - 25:02
    And it will be all gone, in five or ten years.
  • 25:03 - 25:08
    It's pretty clear from the death spiral,
    that's the way in which the volumes of ice
  • 25:08 - 25:13
    in the summer are zeroing in towards
    uh, towards zero,
  • 25:13 - 25:17
    that the ice can't last more
    than a couple more years.
  • 25:20 - 25:26
    There's no way... that ice mass,
    of the end of September,
  • 25:26 - 25:32
    can continue going round this circle,
    for the next five decades.
  • 25:32 - 25:36
    It's moving very rapidly
    into the zero point in the center.
  • 25:37 - 25:41
    It's been decreasing for several decades.
  • 25:41 - 25:44
    In fact, way back into the nineteen-sixties
    and seventies,
  • 25:44 - 25:50
    we have a trend pattern of decreasing area of sea ice,
    particularly at it's minimum.
  • 25:50 - 25:55
    and the minimum sea ice occurs in September
    at the end of the summer warming.
  • 25:55 - 26:00
    But, do have a look at the last few years,
    from 2007 onwards.
  • 26:00 - 26:05
    The data points have been pulling way down
    below the straight line.
  • 26:06 - 26:11
    It becomes more and more obvious that straight
    line representations are no longer
  • 26:11 - 26:17
    the appropriate statistical tool for demonstrating what is
    going on in the Arctic.
  • 26:17 - 26:24
    Then we see it looks like the end of the
    Arctic sea ice area
  • 26:25 - 26:28
    in September, by about 2015.
  • 26:29 - 26:33
    So we're seeing a temperature rise, this is
    the NASA temperature graph,
  • 26:33 - 26:38
    going back to 1880 when we feel
    we have good global coverage with instruments.
  • 26:38 - 26:41
    We can take it back much further.
  • 26:41 - 26:45
    In fact, a very significant paper came out,
    just this past Spring,
  • 26:45 - 26:51
    which looked at a number of different...
    temperature Proxies, as we call them,
  • 26:51 - 26:57
    like tree rings and corals
    and stalactites in caves and things like that.
  • 26:57 - 27:01
    And we pushed back the temperature record
    eleven-thousand years...
  • 27:01 - 27:03
    And what you've got is this, uhn...
  • 27:03 - 27:06
    you've got us coming out
    of the ice age, back here,
  • 27:06 - 27:11
    and then we've got a slow, slow, slow gradual,
    gradual decline, until the last century.
  • 27:12 - 27:14
    And then, this is us.
    Here.
  • 27:14 - 27:19
    So, we're... we're... we're pretty clear that,
    that, uhh...
  • 27:20 - 27:23
    something's changed
    in the last two-hundred years
  • 27:23 - 27:27
    and the only thing that we've been able to track down
    that really answers it is the... uhn
  • 27:29 - 27:32
    greenhouse gases
    that human beings have been putting out.
  • 27:33 - 27:40
    What's going on in the Arctic area at the
    moment is, probably, the fastest moving response,
  • 27:40 - 27:44
    to Global Warming and Climate Change
    anywhere on the planet.
  • 27:47 - 27:52
    In 1859, the English physicist John Tyndall,
    using equipment of his own design,
  • 27:52 - 27:58
    showed that certain gases in the atmosphere blocked
    and absorbed long wave or heat radiation.
  • 27:58 - 28:02
    Four decades later, Svante Arrhenius,
    with thousands of manual calculations,
  • 28:02 - 28:10
    made an estimate of the global warming power of CO2,
    that was very close to today's best models.
  • 28:10 - 28:14
    In the 1950's, american Charles Keeling
    began to measure accurately
  • 28:14 - 28:18
    the steady increase of CO2 in the atmosphere.
  • 28:18 - 28:23
    Spectrographic analysis soon showed that the
    new carbon was, without a doubt, man-made.
  • 28:23 - 28:25
    So it's a rare gas.
  • 28:25 - 28:28
    The atmosphere is almost all, Nitrogen and
    Oxygen.
  • 28:28 - 28:32
    But you see here that,
    out of a million molecules of air in 1958,
  • 28:32 - 28:37
    about 314 of them would be
    carbon dioxide molecules.
  • 28:37 - 28:43
    And you see the graph there at the lower left,
    tracing the first few years.
  • 28:43 - 28:46
    So, you can see a lot of things on this graph
    just, right away.
  • 28:46 - 28:49
    First of all, it's increasing with time.
  • 28:49 - 28:52
    And here's what the Keeling curve,
    which is the popular name for this,
  • 28:52 - 28:54

    looks like today.
  • 28:54 - 28:57
    And you can see that what was 314 then,
  • 28:57 - 29:02
    is now 395 or so,
    pushing 400 today.
  • 29:02 - 29:05
    That's a remarkable story right there.
  • 29:05 - 29:09
    Because that increase is something like 25%.
  • 29:09 - 29:15
    Mankind is changing the chemical composition
    of the atmosphere in important ways.
  • 29:15 - 29:18
    And, the greenhouse effect had been understood
    for a long time.
  • 29:18 - 29:25
    The fact that Carbon Dioxide, and other molecules
    trap infrared energy, they trap heat essentially,
  • 29:25 - 29:29
    had been known to experimental physicists
    in the middle 1800's.
  • 29:29 - 29:33
    John Tyndall, in London,
    put Carbon Dioxide in a tube
  • 29:33 - 29:38
    and measured how it could absorb
    infrared energy, which he could shine on it.
  • 29:38 - 29:46
    The first attempts to understand the implications
    of this for climate date back to the 1890's.
  • 29:46 - 29:49
    So, in a sense, the science was there,
  • 29:50 - 29:54
    connecting Carbon Dioxide amounts of the atmosphere
    to Climate Change
  • 29:54 - 29:59
    until we had the measurements
    showing that the CO2 was actually increasing
  • 29:59 - 30:02
    and increasing much more quickly than had
    been foreseen in the nineteen century.
  • 30:02 - 30:07
    There were more people using more coal and
    oil and natural gas,
  • 30:07 - 30:12
    and the rapidity of the growth of CO2 was
    a surprise to everyone.
  • 30:13 - 30:17
    Popular mechanics magazine
    wrote about this in 1953.
  • 30:17 - 30:24
    The products of research were showing us that
    if we continue to add Carbon Dioxide to the atmosphere,
  • 30:24 - 30:28
    by burning fossil fuels,
    we're going to see a rise in temperature
  • 30:28 - 30:34
    This was the work of Doctor Gilbert Plas, who
    published a very significant paper on this.
  • 30:34 - 30:41
    This had been an issue that had been kicked
    around for the previous hundred years or so,
  • 30:42 - 30:49
    but, it was this research that really kind
    of nailed it in so far as making the science clear.
  • 30:50 - 30:56
    Yet it's taken us this long to really even
    begin to get through to the public dialogue
  • 30:56 - 30:57
    on how important this is.
  • 30:57 - 31:03
    The amount of Carbon Dioxide in the atmosphere
    is what matters to the climate.
  • 31:03 - 31:07
    Climate just reacts to how many and what kinds
    of heat trapping gases are there.
  • 31:07 - 31:11
    The more there are of an important gas,
    like CO2
  • 31:11 - 31:13
    which is by far the most important man-made gas,
  • 31:13 - 31:15
    the warmer it gets.
  • 31:15 - 31:18
    Now, on this graph is temperature and Carbon
    Dioxide.
  • 31:18 - 31:21
    Let's look at the black line first.
    That's Carbon Dioxide.
  • 31:21 - 31:23
    1880 on the left,
    the present on the right,
  • 31:23 - 31:29
    and so, we know that it was rising gradually
    before Keelings measurements began.
  • 31:29 - 31:33
    And that, in the times before the 1800's,
  • 31:33 - 31:37
    when human activities presumably had no strong
    effect on climate,
  • 31:37 - 31:42
    It was near a value of 280
    and these same units of molecules per million molecules.
  • 31:42 - 31:48
    So CO2 has been rising, but
    in all the years before the 1930's,
  • 31:48 - 31:51
    you might say, every year
    was below that average,
  • 31:51 - 31:54
    and in recent years,
    every year's been above it.
  • 31:54 - 31:59
    Again, the natural variability is due to factors
    like El Nino and the occasional strong Volcano,
  • 31:59 - 32:02
    which temporarily cools the climate
    for a year or two.
  • 32:02 - 32:07
    And uh, so these things here are some of the
    strongest El Nino's on record.
  • 32:07 - 32:10
    But that there's a warming now
    and that this period is different
  • 32:10 - 32:13
    from this period,
    isn't in doubt at all.
  • 32:13 - 32:16
    So the question that
    people typically ask is...
  • 32:16 - 32:19
    How do we know this isn't just
    some kind of a normal cycle?
  • 32:19 - 32:22
    OK. It's getting warmer but,
    It's been warmer in the past.
  • 32:22 - 32:24
    It's been colder in the past.
  • 32:24 - 32:27
    How do we know this is
    different from the past?
  • 32:27 - 32:28
    Well.
  • 32:28 - 32:33
    We can measure what's coming into and out
    of the planet by satellite,
  • 32:33 - 32:36
    and the satellites do
    a pretty good job of this.
  • 32:36 - 32:42
    We know, that, the planet is in energy imbalance.
  • 32:42 - 32:48
    We know that that energy imbalance is completely
    consistent with the predictions
  • 32:48 - 32:51
    that have been made
    about greenhouse gases.
  • 32:51 - 32:54
    And we know that
    that's quite a big energy imbalance.
  • 32:54 - 32:56
    It's not small.
  • 32:56 - 33:03
    In fact, it's equal to about 400 thousand
    Hiroshima nuclear bombs exploding everyday.
  • 33:03 - 33:06
    That's about four or five
    every second or so.
  • 33:06 - 33:11
    That's how much energy is being trapped,
    primarily in the ocean
  • 33:11 - 33:15
    because the ocean is
    the biggest heat sink, by far.
  • 33:15 - 33:21
    So, natural sources are in balance between
    emission and absorption.
  • 33:21 - 33:24
    The oceans are actually net absorbers but...
  • 33:24 - 33:26
    Human beings. It's one-way traffic.
  • 33:26 - 33:30
    So it's only us that can be causing the increase.
  • 33:30 - 33:34
    Everything else, even volcanoes,
    is balanced by uptake.
  • 33:34 - 33:38
    So, it's only us,
    that can be causing the increase.
  • 33:38 - 33:41
    From here you are in the early
    nineteen hundreds til today.
  • 33:41 - 33:44
    Blue is cooler than average, and yellow and
    orange are warmer than average
  • 33:44 - 33:47
    and you can see here,
    it's still some blue areas and so on.
  • 33:47 - 33:54
    But starting in the 1970´s, you start to see
    the yellow and orange colors predominating.
  • 33:54 - 33:58
    By the time this ends in 2010 or so,
  • 33:58 - 34:01
    you can see what the world looks like
    today in this picture.
  • 34:01 - 34:02
    There's warming everywhere.
  • 34:02 - 34:05
    There's more warming over the continents
    than over the oceans.
  • 34:05 - 34:08
    There's more warming in the North
    than in the South.
  • 34:08 - 34:10
    And there's the strongest warming in the Arctic.
  • 34:10 - 34:13
    This is a Mercator projection so it exaggerates
    the area of the Arctic.
  • 34:13 - 34:16
    But the warming is strongest in high Northern
    latitudes.
  • 34:16 - 34:20
    And that's because of a number of feedbacks
    that we think we understand
  • 34:20 - 34:24
    of which the most important is that,
    when warming occurs in the far North,
  • 34:24 - 34:26
    the ice and snow melt ,
    as we've seen.
  • 34:26 - 34:31
    And, the ice and snow having melted revealed
    darker water and darker land that was under them,
  • 34:32 - 34:35
    which reflect less sunlight and therefore
    absorb more sunlight.
  • 34:35 - 34:39
    So the chain of events is
    Carbon Dioxide causes the warming,
  • 34:39 - 34:41
    the warming melts snow and ice,
  • 34:41 - 34:44
    the melted snow and ice make the surface darker,
  • 34:44 - 34:47
    the darker surface absorbs more sunlight,
  • 34:47 - 34:49
    and that adds to the warming.
  • 34:49 - 34:52
    The human trigger is now almost irrelevant.
  • 34:52 - 34:55
    The feedbacks have taken over.
  • 34:55 - 34:57
    The mirror that's at the top of the world
    is gonna be gone.
  • 34:57 - 35:02
    It won't be gone in the wintertime but the
    Sun's not shining on it in the wintertime.
  • 35:02 - 35:04
    So, it matters in the summertime.
  • 35:04 - 35:10
    One of the key effects that this has is that
    when all of these Northern areas are covered
  • 35:10 - 35:14
    with white reflective snow and ice,
  • 35:14 - 35:17
    it bounces most of the Solar energy off,
  • 35:17 - 35:20
    bounces it back off into space.
  • 35:20 - 35:22
    But, when we are seeing
  • 35:22 - 35:27
    more and more open water, dark soil
    and dark surfaces,
  • 35:27 - 35:30
    then the solar energy
    tends to get absorbed.
  • 35:30 - 35:32
    So instead of reflecting 90% of all the energy,
  • 35:32 - 35:35
    you're absorbing 90% of all the energy.
  • 35:35 - 35:40
    So, this is what scientists call:
    "A Positive Feedback",
  • 35:40 - 35:43
    and they don't mean that it's good.
  • 35:43 - 35:48
    It's not a positive thing for us because,
    it's more like a vicious cycle,
  • 35:48 - 35:51
    more heat equals less ice,
    and less ice equals more heat
  • 35:51 - 35:55
    and it just sort of
    continues on in a spiral.
  • 35:55 - 35:57
    And that's what we're seeing in the Arctic.
  • 35:57 - 36:03
    And that's why the Arctic is warming at about
    twice the rate of the rest of the planet.
  • 36:03 - 36:08
    And that means that Sun's energy is being
    absorbed into the tundra,
  • 36:08 - 36:16
    the frozen areas of the Northern continental
    masses and into the open ocean where the ice was.
  • 36:16 - 36:22
    So that the whole system is now accelerating
    and accelerating and accelerating
  • 36:22 - 36:24
    and the hotter it gets
    the faster it gets hotter.
  • 36:25 - 36:27
    The faster it gets hotter,
    the more water vapor.
  • 36:27 - 36:29
    The more water vapor,
    the faster it gets hotter.
  • 36:29 - 36:31
    The faster it gets hotter,
    the less ice.
  • 36:31 - 36:35
    The less ice, the less reflection
    so the faster it gets hotter...
  • 36:35 - 36:37
    You begin to get the idea?
  • 36:37 - 36:39
    It has to be a downward curving,
  • 36:39 - 36:43
    what we call exponential decay.
  • 36:43 - 36:49
    And you project that line forward
    as is done in this particular setting of the equations
  • 36:49 - 36:53
    and understanding of Arctic ice mass loss,
  • 36:53 - 37:00
    then, once again, it shows
    zero ice floating on the Arctic ocean...
  • 37:00 - 37:03
    by the end of Summer... 2015.
  • 37:03 - 37:11
    Which confirms precisely, my own work
    on the decay of Arctic ice area to the same date.
  • 37:12 - 37:17
    Mind you, at the same time, the thickness of the ice
    has also been diminishing.
  • 37:17 - 37:20
    The ice in the Arctic now
    is thinner than it used to be,
  • 37:20 - 37:23
    thus more vulnerable to melting.
  • 37:23 - 37:26
    And just to give you an example of what's
    happening
  • 37:26 - 37:28
    just in this past season...
  • 37:28 - 37:30
    This is from March
  • 37:30 - 37:34
    March and April of 2013.
  • 37:34 - 37:40
    Looking at this area above Alaska.
  • 37:40 - 37:45
    We had a cyclone going on, up in this area,
    that was moving, causing some torque on this ice
  • 37:45 - 37:50
    and the ice just started to fracture and
    break up, in a manner that was very very unusual.
  • 37:50 - 37:54
    I talked to scientists at
    the National Snow and Ice Data Center,
  • 37:54 - 38:00
    and they said: "What you're seeing here is happening
    because this ice would've been maybe
  • 38:00 - 38:04
    twenty feet thick thirty years ago,
    and now it's only three feet thick."
  • 38:04 - 38:07
    And so it´s getting pushed around
    and broken up.
  • 38:07 - 38:14
    And much of this did in fact refreeze,
    but it refroze in a manner that was much thinner,
  • 38:14 - 38:20
    much more fragile, and it´s now being pushed around,
    deformed much more easily
  • 38:20 - 38:24
    and melted much more quickly
    then it would've been fifty years ago.
  • 38:24 - 38:29
    When our people think about Climate Change,
    they think in 2100. 2100!
  • 38:29 - 38:32
    We might have two feet of more sea level.
  • 38:32 - 38:34
    Gee, well, I can kinda deal with that...
  • 38:34 - 38:38
    We're talking about 2010.
    2020.
  • 38:39 - 38:41
    It's gonna be really serious impacts.
  • 38:41 - 38:46
    If any of these things happen
    which could happen... anytime.
  • 38:46 - 38:50
    It's like playin Russian Roulette
    with kind of a few bullets in the chamber.
  • 38:50 - 38:52
    As the temperature starts to increase
    more quickly,
  • 38:52 - 38:57
    then other feedbacks are also
    brought into play,
  • 38:57 - 39:01
    and more powerfully
    then they had been previously.
  • 39:03 - 39:07
    The sixth consequence concerns
    what's happening to the Greenland icecap.
  • 39:09 - 39:14
    Now, it sits there as a one-and-a-half mile
    thick
  • 39:15 - 39:19
    layer of ice
    across a large piece of land mass.
  • 39:20 - 39:23
    Once upon a time,
    15 000 years ago,
  • 39:23 - 39:29
    we had great ice sheets,
    covering our most populous zones
  • 39:30 - 39:32
    in the Western hemisphere.
  • 39:32 - 39:39
    Those ice sheets retreated, very rapidly when
    the climate and the oceans switched.
  • 39:39 - 39:47
    And what we're getting here now is a rate
    of retreat that, I believe, is unprecedented
  • 39:47 - 39:50
    in terms of the last ten-thousand years.
  • 39:50 - 39:55
    Earlier this month, the surface of the ice sheet
    covering Greenland melted more widely
  • 39:55 - 39:58
    than has been seen in thirty-three years
    of satellite imagery.
  • 39:58 - 40:01
    We got some reports that there was melt going
    on around Greenland.
  • 40:01 - 40:05
    Literally, like so much water running off
    that it was washing out bridges and things.
  • 40:05 - 40:08
    That there were runways that were on the snow
    that were having problems.
  • 40:08 - 40:10
    You just had to be here,
  • 40:10 - 40:16
    this time last year, to watch this bridge,
    completely wash-out.
  • 40:16 - 40:21
    The discharge of the river, at the point
    was...
  • 40:21 - 40:24
    basically two-hundred times that of the Thames.
  • 40:24 - 40:29
    The effect is small, so far...
  • 40:29 - 40:34
    but, Greenland's mass loss has doubled over
    the last decade.
  • 40:34 - 40:40
    And if that pattern of doubling continues
    over coming decades,
  • 40:40 - 40:45
    then we're gonna have to rewrite some of the
    predictions that we've made
  • 40:45 - 40:48
    about how rapidly
    this is gonna happen.
  • 40:48 - 40:53
    The bed of the ice sheet and the interior
    ice sheet is frozen to it's base.
  • 40:53 - 40:54
    And it's starting to slip.
  • 40:54 - 41:00
    This is the bedrock. OK?
  • 41:00 - 41:02
    And this is your ice.
  • 41:02 - 41:06
    And this is your water.
  • 41:06 - 41:12
    And that this water suddenly and violently
    drains through this channel.
  • 41:12 - 41:17
    Then suddenly you have a change in direction
    but it goes very fast.
  • 41:17 - 41:19
    We're focusing on this little lake over here,
  • 41:19 - 41:25
    you can see these mountain water lakes popping
    up across the surface of the ice sheet
  • 41:25 - 41:28
    as the weather gets
    warmer and warmer.
  • 41:28 - 41:32
    So, what you'll see here is this meanders along,
    it meanders along
  • 41:32 - 41:36
    until it goes down,
    into the ice, right there.
  • 41:36 - 41:38
    And as it goes down,
  • 41:38 - 41:42
    it's delivering all that heat
    down into the deep levels of the ice.
  • 41:42 - 41:46
    So now the heat goes down here and,
    just like a stick of butter,
  • 41:46 - 41:48
    the ice sheet begins to get soft.
  • 41:48 - 41:53
    It begins to move faster and that water goes
    down to the bottom
  • 41:53 - 41:56
    and, because it's an incompressible fluid,
  • 41:56 - 41:58
    It will support, even a kilometer of ice.
  • 41:58 - 42:04
    It will lubricate even a huge volume of ice
    and make it move faster over that rocky surface.
  • 42:04 - 42:08
    So that accelerates the process as well.
  • 42:08 - 42:13
    The water across the surface of this ice sheet
    is rampant,
  • 42:13 - 42:19
    and it's causing untold damage to the base
    of the ice sheet,
  • 42:19 - 42:24
    and it's doing that in deep interior regions
    that never before,
  • 42:24 - 42:31
    not least in the last ten-thousand years,
    have been susceptible to that warming.
  • 42:31 - 42:33
    That water input.
  • 42:33 - 42:37
    That water draining down into the ice
    is relatively warm.
  • 42:37 - 42:44
    The average temperature of the ice sheet, at depth,
    is several degrees below the freezing point,
  • 42:44 - 42:49
    whereas the water that's draining in is right
    at the freezing point.
  • 42:49 - 42:56
    So this is relatively warm water that drains
    in and it heats the ice sheet, internally.
  • 42:56 - 43:00
    Warmer ice deforms more easily than cold ice.
  • 43:00 - 43:05
    So, an increase in melt water draining in
    to the ice sheet has a softening effect,
  • 43:05 - 43:09
    especially when the amount of melt water is
    increasing.
  • 43:09 - 43:12
    You know, Greenland is 23 feet of sea level.
  • 43:12 - 43:15
    7.3 meters, if it all melts.
  • 43:15 - 43:18
    And the history is very clear.
  • 43:18 - 43:21
    When it was warm, there's no ice on Greenland.
  • 43:21 - 43:24
    When it's cold, there's lots of ice on Greenland.
  • 43:24 - 43:28
    And so it's very clear Greenland is very tightly
    tied to temperature
  • 43:28 - 43:31
    and if it gets too hot
    it goes away.
  • 43:31 - 43:36
    And too hot is not very many degrees above
    where we are now...
  • 43:36 - 43:39
    And this is the Ilulissat glacier.
  • 43:39 - 43:43
    This is the calving front of Ilulissat glacier
    that we flew along on the first day.
  • 43:43 - 43:46
    This is the fastest moving ice stream
    in the world.
  • 43:46 - 43:48
    It's 400 feet high.
  • 43:48 - 43:54
    The water is coming down under the ice and
    squirting out down here, below the water line,
  • 43:54 - 43:56
    like... a Jacuzzi.
  • 43:56 - 43:59
    And it's creating circulation down here
  • 43:59 - 44:06
    and it's drawing warm ocean water
    in underneaththe the water line here.
  • 44:06 - 44:10
    And it makes it accelerate the calving off
    of the giant glaciers.
  • 44:10 - 44:14
    And this whole bay here is just full of gigantic
    glaciers.
  • 44:14 - 44:17
    As that movement accelerates...
  • 44:17 - 44:21
    the ice upstream begins
    to crack and deform, like this,
  • 44:21 - 44:26
    and, you can see, as it cracks, that water begins
    to collect in those cracks.
  • 44:26 - 44:32
    And that water begins to absorb more heat
    and, because water is heavier than ice,
  • 44:32 - 44:37
    it actually begins to hydro fracture it's way,
    down into the ice sheet.
  • 44:37 - 44:41
    accelerating the movement even further.
  • 44:41 - 44:45
    So what you're seeing is that,
    at every stage,
  • 44:45 - 44:52
    there is a different kind of a process that,
    not only feeds on itself,
  • 44:52 - 44:56
    but feeds into all
    the other processes in the cycle.
  • 44:57 - 45:00
    On the ice sheet,
    if you wanna know what's happening,
  • 45:00 - 45:04
    you need to just follow the water
    and see what it's telling you.
  • 45:04 - 45:06
    And this is the story that it's telling us.
  • 45:06 - 45:10
    This is why scientists
    are starting to feel that
  • 45:10 - 45:19
    Greenland and ice sheets across the planet
    have the capacity to move much faster
  • 45:19 - 45:26
    then what they have
    during human experience.
  • 45:27 - 45:34
    So, the big concern is that we don't tip ourselves
    into some kind of an event like that
  • 45:35 - 45:41
    where the ice sheets begin to move at a pace that
    is really beyond human capacity to keep up with.
  • 45:42 - 45:48
    As we move to acceleratingly
    increasing temperature change,
  • 45:48 - 45:55
    as the waters all around Greenland are no
    longer covered with floating ice,
  • 45:56 - 46:01
    and as the temperature of those waters around
    begins to increase,
  • 46:01 - 46:06
    so, of course the air over Greenland is hotter.
  • 46:08 - 46:11
    The waters around it are hotter.
  • 46:12 - 46:14
    The ice surface begins to melt,
  • 46:16 - 46:17
    right across the dome.
  • 46:18 - 46:24
    Well, last year in this place
    where we actually flew into, Kangerlussuaq,
  • 46:24 - 46:26
    this is what the river looked like there.
  • 46:26 - 46:29
    It was overflowing,
    this bridge was washing out,
  • 46:29 - 46:31
    giant machinery was being swept away
  • 46:31 - 46:38
    because we were seeing melting that was happening
    over the entire surface of the ice sheet.
  • 46:42 - 46:47
    They had never seen this kind of water flow
    there in that river.
  • 46:47 - 46:53
    So. The consequences for the Greenland ice
    cap are massive.
  • 46:54 - 46:59
    And as it melts, it adds fresh water to the
    global ocean,
  • 47:00 - 47:02
    and starts to raise the sea level...
  • 47:03 - 47:11
    If it goes quickly then we can expect
    2, 3, 5, 7 meters of sea level change...
  • 47:12 - 47:14
    right across the world,
  • 47:14 - 47:16
    to happen, on a decadal basis.
  • 47:16 - 47:19
    i.e., within 10 to 20 years.
  • 47:20 - 47:24
    That would be catastrophic for civilization,
  • 47:24 - 47:31
    many of whose urban centers would be below
    sea level, in the new situation.
  • 47:31 - 47:35
    Actually, the Greenland ice sheet is de-glaciating.
  • 47:35 - 47:37
    It's retreating...
  • 47:37 - 47:40
    but it's retreat is dynamic.
  • 47:40 - 47:48
    It's drawing down the interior of the ice
    sheet, faster than the models assume at present.
  • 47:48 - 47:52
    And hence, the ice sheet and it's interior
    is accelerating,
  • 47:52 - 47:55
    and the melt of the margin is enhanced,
  • 47:55 - 48:01
    and I think that means that this ice
    sheet is ... actively de-glaciating.
  • 48:02 - 48:07
    And that's... a pretty serious problem,
    for sea level rise.
  • 48:09 - 48:12
    Let's move on now to the fourth consequence.
  • 48:12 - 48:15
    And that is the impact on the tundra.
  • 48:17 - 48:21
    Those land masses,
    that border onto the Artic ocean,
  • 48:22 - 48:26
    now have a warmer, open sea coast,
  • 48:27 - 48:32
    and the warmer air and the warmer temperatures
    are being fedback over the land mass.
  • 48:33 - 48:39
    And of course what that does is increase the
    rate of melting of the tundra permafrost,
  • 48:39 - 48:44
    and we get this depth of permafrost melt,
    which we call the cast,
  • 48:44 - 48:47
    increases year on year.
  • 48:48 - 48:50
    That also has consequences.
  • 48:52 - 48:59
    For instance, there's a lot of biological
    material in the deep freeze of the tundra,
  • 48:59 - 49:03
    and as that thaws out, it begins to decay,
    the microbes have a field day
  • 49:03 - 49:09
    and out comes more carbon dioxide
    and more methane from the rotting vegetation.
  • 49:10 - 49:13
    So, methane is being released into the atmosphere...
  • 49:13 - 49:19
    not only from the ocean floor, but also, as
    I said, from the melting of the tundra.
  • 49:20 - 49:22
    And the more methane there is in the atmosphere,
  • 49:22 - 49:25
    as this next slide shows,
  • 49:25 - 49:29
    the greater the greenhouse effect,
    and methane is a very powerful greenhouse gas.
  • 49:29 - 49:32
    When the permafrost thaws,
  • 49:32 - 49:37
    the organic matter in the permafrost thaws as well
    and begins to decay.
  • 49:37 - 49:39
    The microorganisms start to eat it.
  • 49:39 - 49:44
    If there's no oxygen,
    the microorganisms make methane.
  • 49:44 - 49:50
    If there's oxygen,
    the microorganisms make carbon dioxide.
  • 49:51 - 49:54
    Ahh, permafrost.
    Right here.
  • 49:55 - 49:58
    Frozen dirt.
  • 49:58 - 50:02
    We found, as far as
    the organic matter coming out of this hill slope,
  • 50:02 - 50:04
    is that it's much more bio-available,
  • 50:04 - 50:08
    meaning it's yummier for the microbes that
    are decomposing it,
  • 50:09 - 50:13
    than carbon, or organic matter
    near the surface today.
  • 50:13 - 50:15
    So that has climate implications.
  • 50:15 - 50:18
    Because that means that this organic matter
    is processed quicker,
  • 50:18 - 50:21
    it's return to the atmosphere is
    carbon dioxide and methane,
  • 50:21 - 50:24
    and can feed back on climate that way.
  • 50:24 - 50:29
    Sites like this where the permafrost is releasing
    organic matter act as accelerators.
  • 50:29 - 50:33
    They speed up the process of human caused
    climate change.
  • 50:33 - 50:36
    So it's uh, it's a large amplification of
    what we're doing.
  • 50:36 - 50:38
    It feeds back on to our impact.
  • 50:38 - 50:42
    It's important to realize that the scale and
    rate of change that we're talking about now
  • 50:42 - 50:46
    is several degrees, two to five degrees in
    just a hundred years.
  • 50:46 - 50:51
    So this is much faster than has happened in
    the last 50 million years.
  • 50:51 - 50:55
    We're talking about unprecedented climate change
    and a very rapid abrupt response
  • 50:55 - 50:58
    from this eco-system.
  • 50:58 - 51:01
    There have been changes in the Arctic, in
    the permafrost,
  • 51:01 - 51:04
    in terms of the temperature overtime,
  • 51:04 - 51:07
    not only in the shallow layers near the surface,
  • 51:07 - 51:10
    but at 10, 20 and 50 meter depths.
  • 51:10 - 51:13
    You're seeing changes that are even more rapid.
  • 51:13 - 51:15
    That indicates that not only is there heating
    near the surface,
  • 51:15 - 51:20
    but that this heat
    is being transported to depth, very efficiently.
  • 51:22 - 51:26
    The permafrost stores methane.
  • 51:26 - 51:29
    As Richard was talking about,
    it's currently melting.
  • 51:29 - 51:33
    It's warmer up there. It's like, 5 degrees warmer
    up in the Arctic than it is...
  • 51:33 - 51:35
    The average temperature of the world
    is only up a degree
  • 51:35 - 51:37
    but in the Arctic it's up five degrees.
  • 51:37 - 51:44
    And it's releasing 50 million tons per year,
    which is a billion tons of CO2.
  • 51:45 - 51:46
    And it's obviously rising.
  • 51:46 - 51:50
    If it all went, we'd basically all be dead.
    I mean.
  • 51:50 - 51:53
    And, it's happening now.
  • 51:53 - 51:55
    And the problem here is it's accelerating.
  • 51:55 - 52:00
    Once it starts generating, through this process
    or any of the other ones I talk about,
  • 52:00 - 52:04
    once those processes
    generate more CO2 than we do,
  • 52:04 - 52:09
    it won't matter if we stopped completely,
  • 52:09 - 52:10
    it's gonna keep going.
  • 52:10 - 52:12
    These are positive feedback loops.
  • 52:12 - 52:16
    And by the way, it's not in the models.
  • 52:24 - 52:32
    The fifth implication of the Arctic dynamics
    concerns the feedback of the methane release.
  • 52:32 - 52:37
    It is probably one of the most important
    issues that we have to examine.
  • 52:37 - 52:40
    We will be in danger of destabilizing these
    things called methane hydrates
  • 52:40 - 52:44
    which store a lot of methane
    on the bottom of the ocean,
  • 52:44 - 52:46
    in a kind of frozen form,
  • 52:46 - 52:48
    10 000 billion tons of this stuff.
  • 52:48 - 52:52
    And they are known to be destabilized by warming.
  • 52:52 - 52:55
    This chunk of ice may look pretty unremarkable
    at first glance,
  • 52:55 - 53:00
    but put a match to it
    and something amazing happens...
  • 53:00 - 53:03
    As reported in this month's issue of the Atlantic,
    it's called methane hydrate,
  • 53:03 - 53:05
    and it's actually not unusual at all.
  • 53:05 - 53:11
    In fact, there are more than one-hundred thousand
    trillion cubic feet of it on Earth.
  • 53:11 - 53:14
    Volume wise, that's like the size of the Mediterranean
    sea.
  • 53:14 - 53:20
    And it has a greater energy capacity than
    all the coal, oil and natural gas on Earth combined.
  • 53:20 - 53:22
    And well methane burns clean.
  • 53:22 - 53:25
    Unburned methane is
    a potent greenhouse gas,
  • 53:25 - 53:27
    and if it leaks,
    it can be devastating to the environment.
  • 53:27 - 53:32
    The USGS is confident leakage won't be a problem,
    as long as proper precautions are taken.
  • 53:32 - 53:37
    There are potential irreversible effects of
    melting the sea ice.
  • 53:37 - 53:46
    If it begins to allow the Arctic ocean to
    warm up and warm the ocean floor,
  • 53:46 - 53:49
    then, we'll begin to release methane hydrate.
  • 53:49 - 53:56
    About 80 years ago, we switched to studying
    the East Siberian Arctic shelf.
  • 53:56 - 54:01
    And actually, we've been studying it for
    the last 80 years.
  • 54:01 - 54:04
    Continuously, year by year by year.
  • 54:04 - 54:09
    Conducting one or two expeditions a year.
  • 54:09 - 54:16
    That hydrocarbons are produced within the
    sedimentary drape, was sealed
  • 54:17 - 54:21
    and prevented the methane escape into the atmosphere.
  • 54:21 - 54:28
    That is why we're telling that this should
    be the largest hydrocarbon stock in the world.
  • 54:28 - 54:29
    Over there...
  • 54:29 - 54:33
    There is a potential risk that,
    if warming continues,
  • 54:33 - 54:37
    the larger and, maybe, great and massive
    amount of methane
  • 54:37 - 54:40
    could be released
    from this Arctic shelf.
  • 54:40 - 54:42
    Of course there is a potential risk.
  • 54:42 - 54:49
    And in terms of potential risk, I would say
    that this Siberian Arctic shelf has the most potential.
  • 54:49 - 54:55
    Because, as I said, the carbon pool is huge
    and the wall of the shell is very shallow
  • 54:55 - 55:01
    and the warming occurs stronger than in different
    areas of the worlds ocean.
  • 55:01 - 55:04
    And of course it is a potential risk.
  • 55:05 - 55:08
    So the methane in the atmosphere,
  • 55:08 - 55:12
    the amount, the total amount of methane in
    the atmosphere,
  • 55:12 - 55:13
    in the current atmosphere,
  • 55:13 - 55:16
    it's about five Gigatonnes.
  • 55:16 - 55:23
    The amount of carbon preserved in the form
    of methane in this East Siberian Arctic shelf,
  • 55:23 - 55:25
    is approximately...
  • 55:25 - 55:28
    from hundreds to thousands of Gigatonnes.
  • 55:28 - 55:33
    And of course it's only one percent of that
    amount is required
  • 55:33 - 55:36
    to double the atmosphere burden of methane.
  • 55:36 - 55:40
    But to destabilize one percent of this
    carbon pool,
  • 55:40 - 55:45
    I think it's not much effort needed,
  • 55:45 - 55:51
    considering that the state of permafrost
    and the amount of methane currently involved.
  • 55:51 - 55:59
    Because what divides this methane from the
    atmosphere is a very shallow water column,
  • 55:59 - 56:01
    and a weakening permafrost,
  • 56:01 - 56:04
    which is losing it's ability to seal,
  • 56:04 - 56:06
    to serve as a seal.
  • 56:06 - 56:11
    And this is, I think it's a matter of...
  • 56:11 - 56:15
    it's not a matter of thousands of years,
    it's a matter of decades, I think.
  • 56:15 - 56:19
    Maybe, at most, hundred years but
    I think,
  • 56:19 - 56:22
    matter of decades.
  • 56:22 - 56:25
    (It could happen any day)
  • 56:25 - 56:29
    It might potentially happen because,
  • 56:33 - 56:40
    I would list many factors that might, that are very convenient .. convincing for us.
  • 56:41 - 56:46
    So that might happen.
  • 56:46 - 56:49
    Not anytime.
  • 56:49 - 56:52
    Anytime sounds like it might happen today.
  • 56:52 - 56:54
    It might happen tomorrow.
  • 56:54 - 56:56
    The day after tomorrow.
    (It might!)
  • 56:56 - 56:59
    You think so?
  • 57:02 - 57:08
    Igor is very convinced person
    because he spend a lot of time over there.
  • 57:09 - 57:16
    And where the ice should be about two meters
    thick, it was 40 centimeters thick...
  • 57:17 - 57:20
    That means that the processes...
  • 57:20 - 57:26
    All the processes that serves the stabilization
    of everything...
  • 57:26 - 57:32
    of the sea ice, of the water column,
    of the currents increasing,
  • 57:32 - 57:36
    (the currents, I mean the movement of water
    beneath the sea ice increased).
  • 57:36 - 57:43
    So everything, everything looks anomalous.
    Even from our experience from this ten years,
  • 57:43 - 57:45
    everything looks anomalous.
  • 57:45 - 57:51
    And this is what makes him thinking that...
  • 57:51 - 57:58
    making him think that the worst thing might
    happen...
  • 58:08 - 58:12
    Shortly speaking, we do not like what we see
    there,
  • 58:12 - 58:15
    absolutely do not like.
  • 58:15 - 58:17
    Uh, look at this.
  • 58:17 - 58:21
    In a matter of days...
    just days,
  • 58:21 - 58:25
    we're having this huge, this huge area...
  • 58:25 - 58:28
    look at this....
  • 58:28 - 58:33
    going almost exploding with methane.
  • 58:33 - 58:39
    The only way this is possible is by melting
    of methane clathrate.
  • 58:39 - 58:42
    It´s just the only explanation
  • 59:24 - 59:27
    Hi, uhm... how long do you think we have
    before it becomes
  • 59:27 - 59:31
    socially and otherwise
    unacceptable to emit carbon.
  • 59:31 - 59:34
    and, I mean, how radically do you think we
    need to act consensually?
  • 59:34 - 59:37
    Right, well I mean...
  • 59:37 - 59:44
    I think, it's, the more we act, the better
    things will be for future generations.
  • 59:44 - 59:48
    I don't, yeah, I mean there's all sorts of
    estimates.
  • 59:48 - 59:49
    And um...
  • 59:49 - 59:55
    Basically, if we do a huge amount within the
    next ten years,
  • 59:55 - 59:58
    we will still face quite an uncomfortable
    future,
  • 59:58 - 60:01
    and the less we do, the worse it will get.
  • 60:01 - 60:05
    How much of it we can prevent,
    depends on how bold we are,
  • 60:05 - 60:11
    how much we're prepared to do, and that in
    turn is going to depend on changing social opinions.
  • 60:13 - 60:16
    What are the implications of all this,
  • 60:16 - 60:18
    for global dynamic behavior,
  • 60:18 - 60:23
    both in climate, and indeed,
    for humanity as a civilization,
  • 60:23 - 60:27
    and the biosphere of which we are a part?
  • 60:29 - 60:34
    Well obviously, the Arctic is connected to
    the rest of the world, it is part of the world,
  • 60:34 - 60:41
    and what happens in the Arctic inevitably
    has implications and consequences and spin-off
  • 60:41 - 60:43
    for the rest of the planet.
  • 60:43 - 60:50
    Socially, we know we will be beginning to
    remove some of the aerosols,
  • 60:50 - 60:53
    these particulates in the atmosphere that,
    at the moment,
  • 60:53 - 60:57
    are reflecting much of the solar energy
    back into space.
  • 60:57 - 61:04
    We also know that much energy is being taken
    up by heating of the deeper ocean, at the moment.
  • 61:06 - 61:10
    And, as the effects of carbon dioxide,
    and the other greenhouse gases
  • 61:10 - 61:16
    and the global behavior as a whole,
    begin to come back on stream,
  • 61:16 - 61:23
    so, global temperatures will begin to respond
    much as Arctic temperatures did.
  • 61:23 - 61:27
    Co2 begins to increase temperature,
  • 61:27 - 61:30
    increased temperature drives water vapor feedback,
  • 61:30 - 61:33
    water vapor feedback accelerates heating....
  • 61:34 - 61:39
    And then we begin to get hotter conditions
    for some of the tropical forests,
  • 61:39 - 61:44
    we get burn and dieback
    and increased release of carbon dioxide
  • 61:44 - 61:48
    from the bio-mass of the planet.
  • 61:48 - 61:53
    It's a different set of feedbacks from that
    operating in the high Arctic,
  • 61:53 - 61:55
    but it is nonetheless potent.
  • 61:56 - 62:03
    And as in the Arctic, so tomorrow, in the
    world, as a whole.
  • 62:04 - 62:11
    And if the implications of jet-stream behavior
    and food production and Arctic dynamics spin-off
  • 62:12 - 62:17
    into our survival as a species, into our economics,
    into our food production,
  • 62:18 - 62:22
    into the abandonment of the poor,
  • 62:22 - 62:29
    and the inability to sustain a population
    of eight, nine, ten billion people,
  • 62:30 - 62:32
    so, also...
  • 62:32 - 62:37
    The increasing acceleration of global behavior...
  • 62:37 - 62:40
    which will inevitably follow...
  • 62:40 - 62:46
    unless we are able to intervene,
    to slow it down...
  • 62:46 - 62:48
    bring it to a halt...
    and reverse it,
  • 62:50 - 62:53
    then, without that intervention...
  • 62:53 - 62:59
    global dynamics hold a dark future for humanity...
  • 62:59 - 63:05
    a dark future for the biosphere of which we
    are a part.
  • 63:05 - 63:08
    It is time to take action...
  • 63:08 - 63:12
    Not only for the Arctic...
  • 63:12 - 63:17
    but for the global crisis in which we are
    all placed.
  • 63:17 - 63:22
    There's not agreement on how much we need
    to do, how fast.
  • 63:22 - 63:26
    To be honest, I don't think there needs to
    be, because the one thing I am certain of is
  • 63:26 - 63:32
    that we will not do as much as the scientists
    say we need to do.
  • 63:32 - 63:37
    That's why I've never sort of looked that
    closely at that particular question because,
  • 63:37 - 63:40
    what the scientists say we need to do
    is over here...
  • 63:40 - 63:44
    what we're currently doing is way over here....
  • 63:44 - 63:49
    and what various global agreements have tried
    to get us to do, and often failed,
  • 63:49 - 63:51
    is somewhere over here...
  • 63:51 - 63:53
    So the gulf is so enormous...
  • 63:53 - 63:58
    that um, I yeah, I mean, it's a perfectly
    fair question....
  • 63:58 - 64:02
    but for that reason I've never really looked
    at it in much detail.
  • 64:02 - 64:06
    But I do believe that
    the more people believe this...
  • 64:06 - 64:11
    that the more likely they are to act, so I
    suspect that there's...
  • 64:11 - 64:13
    also denial can operate on many levels...
  • 64:13 - 64:20
    You can sort of believe something factually,
    but not believe it deep down in your heart,
  • 64:20 - 64:23
    and so, if you say:
    "Oh, yes, I accept climate change",
  • 64:23 - 64:28
    but, but you just won't allow yourself,
    on an emotional leve,l to think about
  • 64:28 - 64:32
    what is gonna happen
    to the planet in the future,
  • 64:32 - 64:34
    and you can sort of separate
    your everyday life
  • 64:34 - 64:39
    from what you believe,
    in the more academic side of your mind.
  • 64:39 - 64:42
    So, I think that uh...
    in many ways,
  • 64:42 - 64:47
    changing social opinion is the
    most important thing we can do at present...
  • 64:47 - 64:50
    to deal with this problem, because then...
  • 64:50 - 64:54
    people might start moving towards what the
    scientists are saying we need to do.
  • 64:57 - 65:00
    We've got a lot of work to do
    and not much time to do it.
  • 65:00 - 65:04
    Um, as I Iook at the world,
    which is sort of where I start.
  • 65:04 - 65:07
    Um...
  • 65:07 - 65:10
    We've gotta cut carbon emissions fast.
  • 65:10 - 65:16
    Then it becomes clear, we need to cut carbon
    emissions 80%, not by 2050, but by 2020.
  • 65:16 - 65:23
    For decades now, we environmentalists have
    been talking about the need to save the planet.
  • 65:23 - 65:28
    But as I think about it, the planet's gonna
    be around for a long time to come...
  • 65:28 - 65:32
    What we need to save now is civilization itself...
  • 65:32 - 65:35
    This is, this is what's at stake...
  • 65:36 - 65:39
    Coming up here today, I have no hidden agenda.
  • 65:39 - 65:42
    I am fighting for my future.
  • 65:42 - 65:47
    I am here to speak for all generations to
    come.
  • 65:47 - 65:54
    I am here to speak on behalf of the starving
    children around the world whose cries go unheard.
  • 65:54 - 65:58
    I am here to speak for the countless animals,
    dying across this planet,
  • 65:58 - 66:03
    because they have no where left to go...
  • 66:03 - 66:09
    And now we hear of animals and plants going
    extinct, everyday, vanishing forever...
  • 66:09 - 66:16
    All this is happening before our eyes and
    yet we act as if we have all the time we want
  • 66:16 - 66:19
    and all the solutions.
  • 66:19 - 66:23
    You don't know how to fix the holes in our
    ozone layer.
  • 66:23 - 66:27
    You don't know how to bring the salmon back
    up in a dead stream...
  • 66:27 - 66:31
    You don't know how to bring back an animal
    now extinct.
  • 66:31 - 66:37
    And you can't bring back the forest that once
    grew where there is now a desert...
  • 66:37 - 66:39
    If you don't know how to fix it,
  • 66:39 - 66:43
    please... stop breaking it.
  • 66:43 - 66:47
    I'm only a child yet I know
    we are all in this together,
  • 66:47 - 66:51
    and should act as one single world
    towards one single goal.
  • 66:51 - 66:58
    If a child on the streets who has nothing
    is willing to share
  • 66:58 - 67:02
    then why are we who have everything still so greedy?
  • 67:03 - 67:08
    I am only a child yet I know
    if all the money spent on war
  • 67:08 - 67:14
    was spent on finding environmental answers,
    ending poverty and finding treaties,
  • 67:14 - 67:18
    what a wonderful place this earth would be.
  • 67:18 - 67:21
    At school, even in Kindergarten,
  • 67:21 - 67:25
    you teach us how to behave in the world.
  • 67:25 - 67:31
    You teach us, not to fight with others...
    to work things out,
  • 67:31 - 67:33
    to respect others,
  • 67:33 - 67:35
    to clean up our mess,
  • 67:35 - 67:37
    not to hurt other creatures,
  • 67:37 - 67:40
    to share,
    not be greedy.
  • 67:40 - 67:46
    Then why do you go out and do the things you
    tell us not to do?
  • 67:46 - 67:50
    You are deciding what kind of a world we are
    growing up in.
  • 67:50 - 67:54
    Parent's should be able to comfort their children
    by saying
  • 67:54 - 67:58
    "Everything's going to be alright, it's not
    the end of the world,
  • 67:58 - 68:01
    and we're doing
    the best that we can..."
  • 68:01 - 68:05
    But I don't think you can say that to us anymore...
  • 68:05 - 68:09
    Are we even on your list of priorities?
  • 68:09 - 68:10
    My dad always says
  • 68:10 - 68:14
    "You are what you do, not what you say."
  • 68:14 - 68:19
    Well, what you do makes me cry at night.
  • 68:19 - 68:21
    You grown-ups say you love us.
  • 68:21 - 68:27
    But I challenge you, please,
    make your actions reflect your words.
  • 68:27 - 68:29
    Thank you.
Title:
Arctic Death Spiral and the Methane Time Bomb
Description:

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Video Language:
English
Duration:
01:11:12

English subtitles

Incomplete

Revisions