David Attenborough: The Truth About Climate Change (BBC - Part 1)

the evolution of life

not by natural events

but although

In the final program

extraordinary changes and its climate

up to him.

man will stay on earth
should be any longer

or less.

the by the actions of.

And are these events related

You know I belong to the most

in green.

If

at the time I spoke those words.

New climatic extremes are
now being the court.

if out there.

denying a special place in the world,

scientists have been collaborating

I set out to find them film

of the dinosaurs,

over the world

Still a recent event in the
history of our planet.

in Australia.

that in the

is only an average

And so

I had no idea that we have been the

they spared and dominant
species and I more

So,

There is no scientific
evidence whatsoever.

might have unleashed forces

that figure

of landscapes

but it's only in the last decade

that is when females give birth to

had thousands of weather stations
around the world.

nought-point 6 degrees

It contains an astonishing variety

but is the stuff floating around

that the whole intricate web of wildlife

In every part of the world.

than the animals at the
top of the food chain,

We need to,

becoming a modest.

Well,

during a time of course,

The turn of the year,

I've been lucky enough to
spend my time traveling

One species

has warmed

raise their cut.

Miquelon

with all the reserves only
to raise their cubs.

farmers.

million years ago,

the polar bears.

in all it's marvelous
and wonderful for us.

some good

around the world

and its spenders

Since life began

to hunt.

But the Arctic is now melting so fast

During the last 50 years

and everything in it.

is population is the most

by up to 3 degrees.

maybe

by just over

since the early 1980s over
the last 25 years

Up to us.

It's a very rare sight to find triplets.

We live on 27 years ago I presented

tranquilized system so that he
can check their body weight

and in the space that their on it.

each year.

from its very beginnings.

some

than that

is in turmoil.

mothers are going hungry

have global temperatures

going people

ecology of polar bears in relation
to tie not of change

to one of Europe's hottest ever

It is very largely

by nearly a quarter

Dr.

also now.

with the planet's climate.

About 5% of the bears.

to the collapse of glasses

A series of traces

. And they're linking those changes

on one of the most urgent and ambitious
endeavors in our history.

Might drought

it seems that our planet
is being transformed

as to whether or not

Our weather

because the ice is melting
earlier each year

I dealt with the arrival of human beings.

Their main prey are seals

of the whole animal kingdom

By tracking the Bears with such regularity

is our planet.

it will be treated to this

mankind.

things of that nature,

create so much havoc

and climates.

in the southern United States

how much

Once they come ashore in the sea ice melts

life on Earth.

looking at its wonders

it starts almost 2.5 thousand
meters above sea level.

In recent years,

But no,

how can such a seemingly small rise

is one of the coldest places on
earth outside the poll nobody.

over the past 25

many bad

be linked

have evolved to live both
above and below the ice.

Indeed,

nought-point 6 of one degree Celsius.

they will give you.

Good.

that I've come

to assess their health.

before the ice melts,

environment.

on larger bears

This

all related to climb out of form.

a runt of the litter and it's
not likely to survive.

Mountain glasses

and yet they now have
extra mouths to feed.

We're seeing reductions in Cup survival,

is under 3.

The suppose indeed that

the net glass.

The inhabitants of the
tiny Pacific islands

He then

and the less able to provide
for their Cup.

hotel in the climate of fear.

They're trying to understand the unprecedented
changes in our time

The mountain ranges of Patagonia

for 20 years

looks bleak

between years over years

representative species

could have contributed to the change

Diana semi

to the rising temperatures
that they're measuring

in the Amazon

to think about the question

In the fall time

we take the weight and their length
and weak calculate what we

They have been troubled by this problem

We caught more females with
cubs had triplets.

And no species is more at risk

It wasn't all that uncommon
to find triplets.

Through Mario Silva

around 4,000

What happens next.

what I or anybody else has been doing

for polar bears.

it has gone through

since 1930s of courses

it's getting progressively worse.

All.

That means that there is 3 weeks
less feeding time for pregnant

and you're you seeing that

of the planet.

Cobb 2 straight line leg zero 6-9.

towards a sudden tip of South America.

that killed thousands of fish

Since 1900

here.

for Cobb one

8,000 miles away.

all their properties is
they have been cowed

for the last few decades,

in the climate

and it's not hard to see all
meal since last July.

really.

but we're not

to track down the polar

here and at times,

whether he likes it or not.

well

be connected to the intensity
of forest fires

then

while some places have cooled a little

First he needs to find the best.

and check on their health.

is this the whole night was completely
covered with icebergs.

door

20 years ago.

I think

not just these ones on the north
Patagonian Ice Field but glasses

They been there.

And an extraordinary range of animals

The fact remains that man has
an unprecedented control

but it does that

Patagonian Ice Field

JC allergist Dr. Stephen Harmison

since he first started stuck.

rising seas.

Earlier this year

and his team

have discovered that their
numbers have declined

mother.

really

Nick to London

As temperatures rise so
do those of the sea,

And so,

Which led to the death of 27,000 people.

. Russia's

causing sea levels to rise.

The rate of that class Immelt

The destruction of towns and cities

and we're looking at the population

If the current warming trend continues

means that sea levels will
rise even higher.

I think to

It's essentially the weight of
the bear divided by its length

that they grow to their
full destructive power.

in the northern

24 and a half pounds

The

In the fall.

and it gives us a means to compare bears

on in most one.

In August 2005

he could run the entire electric
grid of the United States for

The frozen surface of the sea
creates a highly specialized

If next year is going to happen
like this and much higher than

Square

Now

one of the Cubs is

In southern Greenland.

all over the planet

and what this means

climbing outside

is now 2 values

It is undoubtedly taking place.

this year

I've seen many changes

How you can expert Greg Holland

is slowly but steadily

coupled with the dresser melt

too.

several weeks.

and that

the future

won and.

I've been working on that all of
us here in the Churchill area

is now accelerating.

that worse is yet to come.

calling them but now this year as they

give us a very

has been investigating what
fueled Katrina's force.

In Hudson's Bay

what condition there and when the
come ashore and we found that

We're seeing triplets born in the spring,

that last year,

will certainly be revisited by hurricanes,

like a trainer

tides rose to their highest
level ever known

The global temperature rise is also
being felt much higher up.

Most of the people now experiencing
this high tide is much higher

know placed move.

studied population anywhere in the world.

before the mother wakes up.

flooding the homes of the islanders.

and and that gives us a very visual
record what exactly is going

of time to go.

like the Arctic

but of course the climate of the Earth

call a body-body condition index.

Who would have come ashore last summer

The ground I'm standing on

And on land.

really

There are already plans

they must come ashore

By this time

to get the hurricane started and

will not say that one particular
had can is caused by climate

Some fake MySpace

but they can only hunt

But

health problem for kids

rundown

All my

mothers will not have eaten
for many months,

fun

gradual change

Really destructive winds
are in the region.

more destructive

to be evacuated

and since then,

it

sets out each spring

The Patagonian Ice Field,

years or so low that the condition
of these bears us declining.

from the surface high up
into the atmosphere

He gives a very good record of climate
change over the whole range

close to the north and south poles.

There are no

bears

the bears are forced to fast for
anywhere from 4 months for most

It was here in about the 1870s
and by about 19 the 1930s

guide binning in all those would be

shoreline the lake shoreline

the most dynamic ice fields on Earth.

The team has to work quickly to make
their checks on their family

2.5 to 3 kilometers perhaps 2 miles

It's not just that sea level.

our rubbish everywhere

and it is so powerful,

Is melting at Sutton alarming rate.

from the sun.

air and water.

damaged by this.

one or more of those cubs is not
making it through the fall.

parents up to 8 months for a female such

but the flow this company here.

Here we've got a female
with a trip letter.

retreated another

is one of those who believes

subsidies.

so it's them

the ocean heat energy

it

3 weeks earlier

visual record of climate change
and and the they should be no

above sea level.

has always been changing,

long before mankind

powerful influence on our climate.

It's the sun

They're all in recession pretty well

either because of some great,

It was much warmer than it is now.

Mississippi.

The tropical

The amount of ice flowing into the sea

And the one the tropical oceans,

this

To understand climate change
in the southern hemisphere.

to New Zealand.

has been working in locations
like the meth

I don't

of Tuvalu

tilts and changes it orbits around the sun

Greenhouse gases like carbon dioxide

sea temperatures in the Gulf of Mexico
and the Atlantic were the

he's been studying how they've
changed over that time.

it would have.

A typical hurricane,

We were hearing Martin 88

but according to

When Harry can Katrina breached
the levees of New Orleans

In cycles of tense and often hundreds
of thousands of years

act as a blanket around the earth

but now

The ice is now melting

They have other implications,

This remote part of Patagonia

the more destructive the
hurricane can out.

and yet global temperatures were
only 4 degrees lower than they

This is the first time

only

back up this valley.

reduce the greenhouse effect
and cool the planet down.

Many are now making the connection
between global warming

and this is how strong they shred
the surface of the ocean into a

are already facing the realities
of an invading sea.

we hardly get our boats in the ice front

Very worried

in the time of the dinosaurs.

See what I.

in the ages that followed.

to become so think

and those

a big

The highest,

no plant could grow because they
need carbon to build their

that provides our planet
with warmth and light.

and possibly more frequent.

doubt the climate change is happening.

This

he flooded.

We need to go to places like this.

at

The process requires that the oceans
be warmer than about 26

prediction for tomorrow.

have contributed

This is the,

You can see that

and yet that's will go on that landscape
is completely changed now

and is released back into the atmosphere

when they were

and so keeps a panic.

into

waste area,

Today

to mean changes

flood

everywhere.

their tissues and leaves
and twigs and the like.

There is nowhere else to go.

I don't think there's any
future for him to.

the same city

than

The intensity and sheer destructiveness
of the Heineken

hasn't

The

and especially his

and is now

it stops our planet from freezing
and so sustains life on Earth

so much carbon dioxide.

fear well you here

morass of sea and spray

Hurricane Katrina struck the
coastline of Louisiana,

and without it,

If we look at what glasses and
doing all around the world,

to be burned in the power station,

But on the islands where the highest
point is less than 5 meters

prevent in the sun's energy from
reflecting back into space.

has doubled in the last 10 years.

of

causing oceans to expand

to dramatic shift in my client

people thing these houses and.

they have

a layer

inside,

the kids swimming

At this open cast coal mine in China,

Jordanian

degrees Celsius.

This see-sawing in the Earth's climate

warming seas

the earth

PC

which provides electricity for hundreds
of thousands of people.

All over the planet

These days,

would have been under 5 meters of water

If the city of New York had existed 160.

change.

It's become locked in a
cycle of success if ice

for some of the population

carbon dioxide

Yes.

and because of global climate change

the global temperature would be minus 19

we tend

This year

tour

and with each cycle

Oil and gas

Wasn't the high sea temperatures
that many Katrina so intense.

you can descend for 500m

when we talk of climate change,

taking carbon dioxide out

. The carbon dioxide back
it was still below 300

It's a grim warning

the carbon re combines with oxygen

Boats

fossil fuel.

And it is the rate at which the
carbon dioxide blanket is

high time

70 million years after that

all the coal is being carried
up to the surface

Sickening.

You know.

goes on

that the Earth receives from the sun

and put it back into the atmosphere.

but is global warming of the
changes we're now seeing

looking at this time.

in the debate about global warming.

disaster coordinator.

released the oxygen

a new phenomenon

highest ever recorded.

coal and.

within the

inside the house.

mass on Earth.

The temperature.

since the earth began

is used to fuel the development
of the immensely powerful winds

30 thousand years later,

influence the climate.

When the trees died.

is manufactured.

Stephen

but unfortunately this
stretch of coast song

Ice cap in which his glasses flow from

In particular,

there.

our environment

On the face fit

carbon dioxide seems to be a good thing

you know.

but it's here in the Gulf of Mexico

as carbon dioxide.

that is particularly important

without

which is around us.

much of our Paris was freezing.

cosmic event

to move out because and freight.

they were recording rising levels
of that particular gas in there

If we have to take into account

traps the sun's energy

changes in the level

ever recorded.

yet global temperatures were
less than 2 degrees warmer.

that we ourselves have brought about,

tissues.

changes.

We are

that is causing so much concern.

that the Mitchell becomes impossible
to tell a difference between

roaming in forests,

don't only mean

appear.

And Greg Holland

Been on the edge of an ice pack
some 2 kilometers high

reborn rearguard.

you know.

It was while I was making the living
planet in the mid 1980s

in the amount of energy
that the Earth receives

the great forests

that they

on the carbon.

an atmospheric disturbance over Africa

there is one

These natural changes

scientists were already detecting
crucial changes in the

Although scientists

of of of bubbles

In the United States.

As you can see there's a massive
rebuilding program underway,

the tide began to appreciate the
crucial role of the atmosphere

and further warming the planet.

are maintained

ages.

2005 it was the worst season

cooling effect on the atmosphere
because they were

Just outside the eye of the hurricane

periods and warm period
throughout her history.

The carbon dioxide spreads evenly
through the Earth's atmosphere.

became the turning point

the highest figure

when

are higher now

are today.

Thousand years ago

of atmosphere that wrapped

at minus 36 degrees.

is melting more quickly probably
than any other comparable ice

thickening

through their pores.

the call

Now

He would have found dinosaurs

like a collision with a meteorite

composition of the atmosphere.

Left.

had a

The changes that we've seen

as you climb up away from the Earth the.

per million.

Not the amount amenities

Now the original

far below the glasses.

rising sea temperatures and the
increasing strength of Vatican.

the world

it's.

but in Denver,

in the Earth's history.

taking in carbon dioxide and
using the energy of the sun

we going to be more intense

the patterns of light
energy playing on the

no war.

Why

this is a good compacted

with around 27280

or else because of some more slower

particular

Stephen Harrison

All that time ago.

freezing

I would have been

blast saw the light of day.

than they were thousands of years ago.

It's telling us that human activities
are having a strong him.

and witness

about a particular moment in the past.

Burnley

and this huge proliferation

They were buried

But there's another

green band

Right at the bottom,

exchange takes place.

many glasses that make
up the air we breathe,

we've seen in the past 600,000 years.

for Professor Bob Spicer

These leaves

Well,

Back on the claim it's,

through layer upon layer of rock

When I spoke those words

Colorado.

giving scientists a chance to investigate

fantastic record.

that many of the largest traders

and where we

They then break down on the
carbon dioxide molecules

Over hundreds of millions of years

the fix that carbon

and retain the Cup.

The glasses a melting so fast.

The most recent record today are
telling us that it's up to about

of what was once would and leaves

When I was a boy in the 1930s

beneath the earth's surface.

from the bubbles informed

An analysis of bubbles such as these

and between them.

20 years later

measurements were started 48

These layers are slowly buried

he knows that ice can preserve
valuable evidence.

for all the

beneath the polar ice caps.

among the

from the top of the extinct
volcano of money on lower

eventually before these layers of ice

for hundreds of thousands.

was driven by natural forces

I'm

Leaves absorb the gas from the atmosphere

Bridgestone Youzhny.

huge amounts of cotton dioxide.

In other words,

laboratory

and overtime

with the carbon still within

The greenhouse blanket the

becomes colder.

oxygen

for us

there is a greater bulk

to studies appliances

Wright round.

crushed and compressed

It's called the greenhouse effect
and it prevented the planet from

when the ice

in shaping our climate.

5

could now be occurring.

kind of a fence sitter

parts

It's particularly worrisome because.

the wetness comes from the
abundant Equatorial rains

on the trees

the Amazon region suffered its
worst drought in 60 years.

380

Out of the atmosphere

explained by natural climate cycles.

in ways that we are just now learning
can be quite devastating to

warmth

years ago,

, which disrupted the rainfall
patterns in the forests.

It's an ideal place

was formed.

Nicol also

what we call the pre-industrial
output before he wins were

hundreds of thousands of years'
worth of ice core records

representing 10s of millions of years.

The world's coral reefs and other
marine equivalent of the

in places like Antarctica and Greenland
gives us that that that's

is taking the opportunity to descend
deep into a pair of us in the

we have the opposite effect
we warm up the atmosphere.

You have to see how come not citing
changed with the pattern

In 2005

But when you touch,

growing on who was under when we cut it.

When such fuels averting

greenhouse gases involved
in climate change

As a result,

That's nice one,

atmosphere oxygen and carbon dioxide

You,

. The first regular

the forest.

brief Miles this

in covering an even more sinister threat

you're through years layer
after layer of snow

In Patagonia is ice fields

But how can we possibly know
that carbon dioxide levels

of carbon dioxide.

we.

That blanket extends for
miles above the earth's

Some 50 million years ago

We need to know about how come
a dark side has changed the

is often referred to as
the lungs of the world

Is become thinner.

huge gaps open up in the summer months,

in the ice fields as originally
contained it

and

and the alchemy that shelter inside them.

A relationship established hundreds
of millions of years ago

starting to have a team

this

Yes.

over hundreds of thousands of years.

Then 27 years ago

concentrations of change in the atmosphere

. It's risky.

Premier League.

it's here,

envelope

around the world,

they've had

I mean for Professor marks a rare as

have still not recovered.

Latinos and past climates,

That record is now also preserved
thousands of miles away.

them deforestation

there's an accumulation of snow

seemed won a huge unblemished
and healthy world of its own.

What we see here are layers of fossils

which stretches in a broken

The lack of rain,

very close to the top

has spent the last 20 years studying

Yes.

and in spite of intensive logging

of the basin,

if we want to understand the
the role of carbon dioxide

the thickness reached 382

are dying.

The potentially invaluable
records of the past

in Hawaii.

for the.

a brilliant bike.

it's an effect 30%

because when a drought comes often
with very little warning

He and other scientists

they had

Even in places

Right now we're measuring how much

of heat and likely.

but the weather

and it's within these layers of ice

Ove Hoegh

on this whole idea

a former self getting really concerned

Carlson

as a sort of as a thermal
blanket over the earth.

and can be found

is worrying marine biologist
Ove Hoegh Guldberg.

life within them

The Emerson

anywhere else at all

Everywhere and up.

exactly what is predicted,

you know.

The 2000 kilometer long Great
Barrier Reef in Australia

Scientists don't pretend that they
can predict specific changes to

Carbon dioxide is a as an important
driver of climate change.

here

up in the canopy

rather than days

In this store room of the United
States national ice core

down

is drought

Last year's drought caught
assault by surprise

I just saved

in the,

may look like some fantastic

and later after they don't

We're just right now getting a handle on

These ice cores have been extracted
from as much as 3 kilometers

You can see the ice here
is absolutely full

in changing the global climate.

protect our future climber.

artists.

This is the cost of the out,

is that important factor in in

between the tiny animal coral polyps

You can see them out of water,

enormous trees,

jungle of plants and flowers.

each one provides a valuable
source of information

. And

It's the type of ocean heating and
it seems to cause the drought

led to a catastrophic fall in river levels

is it your full of forest fire because
of the drought of 2005.

past

for here plants taken vast volumes
of carbon dioxide and give out

snow

that we can tell all kinds of things
about deep that the Earth's

I was unaware of a new and
disturbing phenomenon.

Early in the life on Earth series

from the tropical sun

all that's left of the

contributing to a model that scientists
like Peter Cox can use to

to appreciate the immensity of the
greenery where this gaseous

seem to be much too strong much
too radical to be just simply

the time glitz golf

that future events may happen.

And of course the bubbles contain

every year on the top of Greenland,

as predicted if

under increasing strain.

formation of clouds in the atmosphere

and though it to the very extreme
2003 summer we've suffered in

come from the Greenland ice sheet.

vast areas of this phone is still survive.

Where everything from the melting
ice in the Arctic to the

oxides in the atmosphere,

this Congress.

and silicone struggling,

If you talk to be 5 years ago

this leaf

in the Amazon last year that is

is using approved

The tropical rainforest,

what we find today is at the carbonate

I tells me that you know

the climate with absolute certainty.

are represented by solemnly leap,

chunk of ice was about 16,000 years old

how many hundreds of thousands
of square kilometers of forest

What we've seen now.

for warmth

oxide concentrations in the atmosphere
are higher than anything

is a one in 200 year type of event,

but if the warming continues.

decimating the fish popular.

and more severe head

hopeful who worry.

Not

were severely damaged by a drought killing

which are absorbing

water stress the tree that

has seen temperatures are abnormally high.

is like a virtual world a
sort of flight simulator.

It if we measure this in parts
per million of carbon

is twice as likely as it was before
we started to click change the

You have to get up into the branches,

the reef

of.

I described the intimate relationship

most of the

The reason

But the Amazon

now at risk.

and the call may die

he has discovered

this is the 3rd bleaching event

some 50m about the ground.

and the temperatures of the oceans

but they contain older complex they
contain clouds they contain

it affects not just

in the last 90 years of the Great
Barrier anything and everything

Those villages

The drought was linked to the abnormally
warm seas in the Atlantic

Devastating thought

from space.

than they had previously.

and

in early 2006

comes from 2 main courses

and began to affect our lives in every way

existing

Now the wind is blowing.

So you know

rainforest teeming with countless
different species.

one or 2%

This year

the stone.

If you cut off.

He killed many people
in France for example

So it may well be the river

6 months after the drought

smothering fields and villages.

in the area.

What I think

There was also sold

it has a hard being incongruous

More and more sensitive and.

of

many villages have deserted
their homes for the cities.

So you know it's not on the radar

So you can see that today if levels
are far beyond anything that

What we're seeing now is
the impact of humans

Dan never stat is finding that the trees

of the jungle.

you might have noticed.

Then the out he won't return

reflect the skeletons

could be the 2006

and

humans are starting to change
the climate itself.

multicolored

each one

you

must endure a daily battle
with the encroaching

is not the only rich ecosystem

That

called White out

Climate

Lately.

is one of the wonders of the world.

is sea temperatures remain
high for too long.

completely create a standstill.

of life both animal and plant
and the greater diversity too

are suffering from severe drought

The

Those changes

crunch

are severely damaged

Those 2 factors have created the jungle

devastating effects and the people
who live in the Amazon.

Go

trying to discover how badly affected
the local people are.

is for me the most scary part about
the future of the Amazon

come out of weather forecasting models

But scientists like

One place where the Hadley model
is predicting increasing

to see which best explains the
changes in temperature.

they run for much longer periods
around own for hundreds of years

from the harvest was very bad

How can we possibly know
what the future holds.

So what do you know she also.

to the health of the John.

There's been no rain for 3 years

of work well by,

Well,

why was that

and their scenario

at the Hadley Centre,

younger.

and then we get to a period

Yeah,

that eventually produced Greece
so immense that they're visible

Algeria,

which are the key organisms
in these ecosystems

The model

several hundred

is the next year

you could reasonably argue

group.

absolutely

It's impossible to put any particular
climatic or weather event

said it really stressed out rescue

next had

if the dying

will consider that call you.

Europe.

one,

passing astronaut came this way,

This super computer can perform 10 billion

Warming sea temperatures are already
putting the oceans and the

is how can we distinguish between
variations due to natural causes

you have a lot of that this is

There seems little doubt

When I come here and see this

And it's not just the non-human.

calculations per second

but dust storms

and I called customer funds
that you rather frightening

That's something that is a,

we get this recent

have found that the reefs a far more
sensitive to see temperatures

model and to put in the various factors,

is that this reaching is
becoming more frequent

it throws up

Now,

there's been a marked decline in Maine.

dealings.

When the winds pick up

to discover how stressed

there wasn't so much sand here before.

from

If you go,

scientist

recently well this mid-century warming so

will be under threat.

like the one of summer 2003

province in northern China.

if there is takes a lot of time
so it affects my work.

as well as reproducing.

who left in these corals

Professor Peter Cox

million years ago,

If you get to the latter part of
20th century from about 1970

believe that they have put.

the complexity and beauty of our planet.

for troops being on recently

But what you can do is say that climate
change affects the chance

of an event occurring

beyond our.

a warming of the climate
and global warming,

movement

Some species that live in them

is working for the Chinese government

I examined it for myself.

we can't buy anything

and Clark models have to contain
slower components like how the

is a case in point.

not

Anelka

is the cause of the changes we're seeing

where the desert is expanding.

the state of the car on the Barrier Reef

True variability.

securities would you might they
want to improve their lives.

up to this point,

a rare event now

until that can you remember when you were

but I think I said it really
quite like this before.

But at the time I was making the series

It's the biggest challenge

But they can do

and those variations of the climate

Adobe proudly

Chi white.

our whole way of life is structured
around the Burmese

that there are a huge changes on
the way with climate change

warming

We ourselves have become

I can say it isn't blitz Carl's

okay I'm here,

Of

has not had a harvest for 3 years.

it's another reminder

What we're gonna do is to
take a walk through time

Such storms are already afflicting
cities like Beijing

they getting more frequent

humans are was that natural.

occasionally there's a downward trend
that's associated a volcano

But it's become more serious.

convinced me it anyway

rainfall patterns they contain winds

mostly from carbon dioxide
that comes to fossil

and our carbon dioxide emissions
into their model

but that

activity

vegetation on the soil respond
to changing how the oceans

Away.

rifle.

onwards.

What is particularly unsettling

He observed temperatures

In recent years.

All those years ago.

models that essentially

you can see the red curve.

If you look at the green line of now.

now explain to us the significance

that we can't find the answer
to some of the big questions.

climate scientists

since the 19-7.

I remember when I was a child.

something

and I've been terrorized by combination

that they will occur.

looks realistic looks like the real
world and the second thing,

if you like,

and then we get this yellow
card and we can see

In soup will drink

rises

of fossil fuels.

account gets into my house.

can we expect

Not good news for a land

the sand covered everything

You know what.

It's here at the Met Office's
Hadley Centre in Exeter

temperatures

Over the last 120 years.

So there you have it.

despite so much evidence some people
refused to believe that human

was built

down to climate change alone.

heatwaves more often.

environment was really good.

For instance,

the key thing

there's been a

again we include human factors particularly
include greenhouse

Some of our richest environment.

this village

We as a species will not be immune either.

really begin to diverge.

Over the last 20 years,

In recent years.

change.

a lot of people have left
the village already.

effect

to keep out

moved to a better place with water
and much better conditions

climate

Those who are left behind like one lane

Georgia.

we can see that's no longer true.

and you can see that the

But they require

So this is when volcanoes go off

and by 20-40 because of
future climate change,

and the first thing to note,

the steep rise in temperature

ego

But the

Powerful winds have driven
the thin soil into dues

his calculate the likelihood

around about 1910

what caused that

recognized it was a force of nature

we most certainly have to do so,

And yet

and the issue is

that this recent

and the output from the sun

one of the chances of are having
another major heatwave

if you go you know and I get home
if I don't brush I sand away

went dry

it can give us the probability

So what we do to try and work that
one hours to take a climate

almost the norm by 20-80

we can only depend on the food
given by the government

that includes just these natural factors.

it will become a one in 2 year event

like

Then if you,

as the planet warms up

this one that we marked out on the floor

And

climate variation can be explained
by natural factors,

that without the action of human beings,

Okay.

as we walk through its a bit the
climate is naturally variable.

Here

It's clear

curve can reproduce

blinkered here is a car model

It's a spiky based

And in 1973

Professor Lin that

that are induced by human activity.

going off the coast of system
down because of the dust,

to global warming

And we have the capacity to adapt
and modify our behavior

And the question again is what
caused this recent woman.

the dry soil

that while I've been traveling
the world trying to record

what we can say with its

The night to have been making
my own contribution

the grass struck growing

both natural climate variations

if we are to deal with climate change.

in the green

We are all involved in this,

that

At the same situation to do

and when I was a child who it was
also sometimes very trying

was that

rather rapid warming reproduced

continues this will only get worse.

and without crops.

that aren't swamped by sand

that have been prepared from

they would have been far
less temperature change

So we run the model,

You know,

where you can start to see an upward trend

sea wall

the model tells us

The key question of course

IVF.

and we have no money to spend.

The bleak realities of climate change

the general it just

We have no income

of this squad.

are being felt all over the world.

what he

the climate models

I find it sobering

They sat

is due to human activity.

isolates around

now

was a graph like

Okay.

but this recent morning
is due to human beings.

as I recognized when I presented
life on Earth.

but as we move on,

and that tells us 2 things,

one is that the model

The mid-century

a force of nature.

We are a flexible and innovative species.

to think

This

we have yet faced.