Plastic wastes contribute to the greenhouse effect | Sarah-Jeanne ROYER | TEDxClermont
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0:11 - 0:14I should have been in the ocean surfing,
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0:15 - 0:21but my passion for finding a solution
to the plastic-pollution issue -
0:21 - 0:23had me in the lab.
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0:24 - 0:28I was taking up where
my colleagues had left off, -
0:28 - 0:31and the reason that I'm here today
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0:31 - 0:36is to explain to you my research
over the last three years. -
0:37 - 0:40Let's take it back from the start.
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0:41 - 0:45Plastic showed up 70 years ago.
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0:45 - 0:48It brought convenience to people.
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0:48 - 0:52Plastic is very cheap,
so it has a very low cost; -
0:52 - 0:57it has durability,
and it's very convenient. -
0:59 - 1:03According to Times Magazine in 1955,
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1:03 - 1:07plastic made people's life easier.
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1:07 - 1:09They focus on the fact
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1:09 - 1:13that disposable dishes and plastic
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1:13 - 1:19would make the life of housewives
much more convenient -
1:20 - 1:24because they will spend
less time washing the dishes, -
1:24 - 1:26and gain time to go shopping.
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1:27 - 1:31Overall, plastic had a big impact
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1:32 - 1:35in different spheres of our everyday life,
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1:35 - 1:37such as food,
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1:37 - 1:39healthcare,
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1:39 - 1:41transportation,
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1:41 - 1:42plastic surgery
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1:43 - 1:45and even clothing.
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1:46 - 1:47Let's take a look at your clothes -
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1:47 - 1:51or your neighbor's clothes
if you feel comfortable. -
1:51 - 1:53Look at the tag
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1:53 - 1:56and realize that most of our clothes
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1:56 - 2:02are made out of polyester,
nylon and lycra. -
2:02 - 2:05All these materials are plastic.
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2:06 - 2:08And while doing yoga,
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2:08 - 2:11you may only be covered in plastic.
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2:12 - 2:13Namaste.
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2:14 - 2:20Plastic has brought great convenience
to people around the world -
2:20 - 2:23and is used on an everyday basis.
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2:23 - 2:25We all touch plastic today.
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2:25 - 2:29But the short term
convenience that it brings -
2:29 - 2:35has a very long-term ecological cost.
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2:36 - 2:38When you picture paradise,
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2:38 - 2:40this is what you picture.
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2:40 - 2:42This is Hawaii.
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2:42 - 2:45But this is also Hawaii.
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2:46 - 2:49This is also called away.
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2:49 - 2:54When you take a plastic bottle
and you throw it away, -
2:54 - 2:57this is where it may end up.
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2:58 - 3:01Hawaii is known for its plastic pollution.
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3:02 - 3:03On our beaches,
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3:03 - 3:07more than 95% of the plastic
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3:07 - 3:11comes from outside of Hawaii.
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3:11 - 3:13Mostly from Asia
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3:13 - 3:17because of the geographical
position of the Hawaiian islands. -
3:18 - 3:20But overall,
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3:20 - 3:23we are all responsible for this crisis
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3:23 - 3:27because we all consume plastic.
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3:29 - 3:35Out of 8,300 million
metric tons of plastic -
3:35 - 3:39produced to date since the 1950s,
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3:39 - 3:44about 30% is currently being used,
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3:45 - 3:49and a small share, that is recycled.
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3:49 - 3:54Then about 10%
of the plastic is incinerated. -
3:55 - 3:59But 60% of all this plastic
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3:59 - 4:02that's been made since the 1950s
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4:02 - 4:07is currently in the environment
and in landfills. -
4:08 - 4:11This is an enormous problem,
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4:11 - 4:13and we are far away from fixing it.
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4:17 - 4:23Plastic production in the next 32 years
is going to ramp up. -
4:23 - 4:25The projections are
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4:25 - 4:30that 12,000 million
metric tons of this plastic -
4:30 - 4:35will end up in our environment
and landfills by 2050. -
4:36 - 4:41This is double what we
have accumulated in 70 years. -
4:44 - 4:46At the University of Hawaii,
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4:46 - 4:51at the "Center for Microbial Oceanography:
Research and Education," -
4:52 - 4:55we study the degradation of plastic.
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4:56 - 5:01The finding of our research
showed that the impact of plastic -
5:01 - 5:03is even worse than what we thought.
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5:04 - 5:07Let me share with you what we discovered.
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5:08 - 5:11My colleagues Sara Ferron
and Samual Wilson -
5:12 - 5:14were making measurements
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5:14 - 5:19of the biological production
of methane in seawater, -
5:19 - 5:21and the numbers they got
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5:21 - 5:25were way higher than what they expected.
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5:25 - 5:28They went back to
their experimental protocol, -
5:28 - 5:32and they realized that most of the methane
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5:32 - 5:36was coming from nonbiological sources;
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5:36 - 5:41it was coming from the bottles
in which they were incubating seawater. -
5:42 - 5:46The bottles were made out
of a specific plastic: -
5:46 - 5:48high density polyethylene,
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5:48 - 5:50also named HDPE.
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5:51 - 5:55HDPE will react because of the sunlight,
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5:55 - 5:58will degrade and emit methane.
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5:59 - 6:02Plastic emits methane;
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6:02 - 6:05methane is a greenhouse gas.
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6:06 - 6:11Methane makes up
20% of all greenhouse gases. -
6:12 - 6:18Methane is 21 times
more powerful than CO2. -
6:18 - 6:21You take 21 molecule of CO2,
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6:21 - 6:25and it corresponds
to one molecule of methane. -
6:27 - 6:29This is also one of the reasons
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6:29 - 6:34why so many scientists are focusing
on the the production of methane, -
6:34 - 6:38from the permafrost
to agricultural practices. -
6:39 - 6:41So this unexpected discovery
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6:41 - 6:44was the start of my
two-year post doctorate -
6:44 - 6:46at the University of Hawaii,
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6:46 - 6:48where I focused mostly
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6:48 - 6:54on the emissions of greenhouse gases
from plastic in the environment. -
6:56 - 7:00After this mind-blowing finding,
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7:00 - 7:02we expanded our research.
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7:02 - 7:08We selected the seven most commonly
used types of plastic in the world. -
7:08 - 7:11Low density polyethylene,
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7:11 - 7:12LDPE,
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7:12 - 7:18was the plastic type that will produce
the most greenhouse gases. -
7:18 - 7:20Some examples of LPDE
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7:20 - 7:22are plastic bags,
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7:22 - 7:24shampoo bottles,
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7:24 - 7:27containers for food and vegetables.
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7:27 - 7:31A lot of the LDPE products
are single-use plastic: -
7:31 - 7:32we buy it,
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7:33 - 7:33we use it,
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7:34 - 7:36and then we throw it away
in a few minutes. -
7:39 - 7:41Unfortunately,
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7:41 - 7:43polyethylene, or LDPE,
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7:43 - 7:45is also the most produced,
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7:45 - 7:47consumed
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7:47 - 7:51and discarded type of plastic
in the environment. -
7:52 - 7:57It also degrades quick,
because of its weak chemical structure, -
7:57 - 8:02and eventually contributes
to the pool of micro plastic. -
8:06 - 8:10As plastic degrades in the environment
because of the sunlight, -
8:11 - 8:14the plastic will start having cracks,
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8:14 - 8:17bits, micro fractures,
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8:17 - 8:21the surface area of the plastic
will increase with time, -
8:21 - 8:22and then,
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8:22 - 8:25more greenhouse gases will be produced.
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8:27 - 8:29Let's think about a bottle.
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8:31 - 8:36The bottle of plastic
that you bought at a shop -
8:36 - 8:39produces very little greenhouse gases,
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8:39 - 8:40but with time,
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8:40 - 8:43the same bottle of plastic will degrade,
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8:44 - 8:46the surface area will increase,
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8:46 - 8:50and eventually, it will
break down in small pieces, -
8:51 - 8:52and with time,
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8:52 - 8:54more and more gases will be produced.
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8:55 - 8:57Let's put numbers here.
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8:57 - 8:59For example,
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8:59 - 9:04if we think of LDPE powder,
and LDPE pellets - -
9:04 - 9:06pellets are basically nurdles;
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9:06 - 9:08they are virgin plastic
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9:08 - 9:12used by the plastic industry
to make other plastic items. -
9:13 - 9:15For the LDPE powder,
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9:15 - 9:19we will get 488 times
more methane produced -
9:19 - 9:21than for the pellets.
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9:22 - 9:23This means then,
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9:23 - 9:26as plastic degrades in the environment,
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9:26 - 9:29all this plastic
that we've been discarding -
9:29 - 9:31is currently degrading,
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9:31 - 9:35so more and more gases
will be produced with time. -
9:37 - 9:39As an oceanographer,
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9:39 - 9:41most of my work is in the ocean.
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9:42 - 9:44Most of the experiments we did
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9:44 - 9:48were to look at plastic
submerged in water. -
9:48 - 9:50But as a comparison,
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9:50 - 9:52we took plastic submerged in water,
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9:52 - 9:55we compared it to plastic in air.
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9:56 - 9:58This is when things got really scary.
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9:58 - 10:00We basically saw
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10:00 - 10:03that the plastic exposed to air
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10:03 - 10:07will produce two times more methane
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10:07 - 10:09than when it's submerged in water
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10:10 - 10:13and 76 times more ethylene -
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10:13 - 10:15which is another greenhouse gas -
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10:16 - 10:18than when plastic is in water.
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10:19 - 10:21This changed things.
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10:21 - 10:26It means that not only
the plastic in the ocean -
10:26 - 10:30but the plastic all around us
in the environment - -
10:30 - 10:35in your back yard, your car,
toys at the beach - -
10:36 - 10:39are currently emitting
greenhouse gases -
10:39 - 10:42and contributing to climate change.
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10:44 - 10:46Now we have to investigate more
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10:46 - 10:50and see if it is
a significant contribution. -
10:51 - 10:54These results only further the need
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10:54 - 10:59to find broader solutions
to our overconsumption of plastic. -
11:01 - 11:03I'm not here to vilify plastic;
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11:03 - 11:06I'm here to understand the science
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11:06 - 11:10behind the emissions
of greenhouse gases from plastic. -
11:11 - 11:12Of course,
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11:12 - 11:16there are places around the world
where plastic has saved life, -
11:16 - 11:18but overall,
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11:18 - 11:24the plastic we use is unnecessary
and is only used as a convenience. -
11:26 - 11:30Plastic is designed to last a long time,
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11:30 - 11:34yet we still use it
only for a few minutes. -
11:36 - 11:38When we are done using plastic,
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11:39 - 11:41it may end up in the environment,
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11:42 - 11:43in Hawaii,
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11:44 - 11:48and this for an
undetermined period of time. -
11:49 - 11:53It can easily last longer
than your own lifetime -
11:54 - 11:57or even your children's life.
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12:00 - 12:01What to do next?
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12:02 - 12:05I see this issue as a two-way approach.
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12:06 - 12:08We have to think of the past,
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12:08 - 12:11and we have to think of the future.
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12:12 - 12:14So to deal with the past
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12:14 - 12:16and all this plastic
that's been produced, -
12:17 - 12:20we have to find reactive solutions.
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12:21 - 12:23But then, to deal with the future,
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12:25 - 12:28we need to find a proactive solution
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12:29 - 12:33to prevent the creation
of the future plastic. -
12:36 - 12:37For the past,
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12:37 - 12:40we have all this plastic
in the environment, -
12:41 - 12:43and we only need to remove it,
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12:43 - 12:45as simple as that.
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12:45 - 12:47We can remove plastic
through beach cleanups, -
12:48 - 12:50ocean cleanup,
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12:51 - 12:53drain river cleanup,
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12:53 - 12:55even plogging,
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12:55 - 12:58that I started in Barcelona in 2009,
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12:58 - 13:01long before the word even existed.
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13:02 - 13:06And also there is recycling
and waste-to-energy. -
13:07 - 13:11More effective than reactive solutions
are proactive solutions -
13:11 - 13:14and how to deal with the future plastic.
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13:14 - 13:17We have to be proactive.
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13:18 - 13:23This means dealing with the issue
from where it's coming from -
13:23 - 13:25rather than where it ends up,
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13:25 - 13:27like Hawaii.
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13:27 - 13:31It means finding better material,
better technology -
13:31 - 13:35and decrease the plastic
production from the source. -
13:37 - 13:40So imagine yourself
after a long day at work, -
13:41 - 13:43you go back home,
you're about to take your keys, -
13:43 - 13:47and then you see some water
flowing from under your front door. -
13:48 - 13:52You rush quickly into the house,
you walk to the bathroom, -
13:52 - 13:54and you see that the water
is coming from there. -
13:54 - 13:57You look and you see
the bathtub overflowing. -
13:58 - 14:01So at this point, you have two solutions.
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14:01 - 14:04You either run out of the house,
you take a bucket, -
14:04 - 14:08you bail out the water
from the bathtub; -
14:09 - 14:11or you have the second solution,
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14:11 - 14:15that is drastically much more efficient:
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14:15 - 14:18you look at the source of the problem,
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14:18 - 14:21and you turn off the tap.
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14:25 - 14:28So next time you throw plastic away,
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14:29 - 14:32think about a way to avoid it
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14:32 - 14:34and think of Hawaii.
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14:35 - 14:36Thank you. Merci.
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14:37 - 14:39(Applause)
- Title:
- Plastic wastes contribute to the greenhouse effect | Sarah-Jeanne ROYER | TEDxClermont
- Description:
-
When trying to measure methane produced by biological activity in sea water, Sarah-Jeanne Royer found with her colleagues that the plastic bottles holding the samples were a bigger source of this gas with powerful greenhouse effect. Sarah-Jeanne works at developing a better understanding of the processes of plastic degradation and fragmentation, and its future in the ocean... but also at convincing the leaders to use scientific data to develop better laws to reduce the production and consumption of plastics.
As the first female sergeant to lead a group in the first regiment of the Canadian Army, Sarah-Jeanne also served for 13 years for the Voltigeurs de Québec. Dr. Royer is an oceanographer and a researcher specialized in plastic degradation at the International Research Center on Pacific of Hawaii University.
This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx
- Video Language:
- English
- Team:
- closed TED
- Project:
- TEDxTalks
- Duration:
- 15:02
Raissa Mendes
Hi! I think that the name of the scientists are Sara Ferrón and Samuel Wilson.
It's easier to read the names when we watch the video on YouTube, 5:07:
https://www.youtube.com/watch?v=rmWzjY_oH9E&feature=emb_logo
5:08 - 5:11
My colleagues Sara Ferron
and Samual Wilson
Raissa Mendes
Hi! I wonder if what she says at 9:03 is "nodule" instead of "nurdle".
"9:03.89
pellets are basically nurdles;"