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Viewers like you make
this program possible.
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Support your local PBS station.
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00:00:12,200 --> 00:00:13,280
Life.
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00:00:15,640 --> 00:00:17,440
The closer you look...
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...the more mysterious
it seems.
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We can't see the invisible
forces at work.
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But what if we could?
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It's time to look at
our home...
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...in a whole new way.
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Imagine carbon
cycling through nature.
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It's one of the building
blocks of life...
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...and it's stored
in our forests...
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00:01:05,120 --> 00:01:06,880
...oceans...
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...and grasslands
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on an incredible scale.
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But we've released too much
of it into the atmosphere,
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risking our future.
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We can halt emissions
and draw the carbon back down.
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And our best ally
for that is nature.
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Restoring it to abundance
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is the biggest challenge
of our time.
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But we CAN do it.
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If the future of nature
looked brighter,
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so could the future for us all.
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Our ocean.
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It's the greatest ecosystem
on the planet.
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Standing by.
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There might be
a group going left to right.
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- They just dove.
- Roger that. Thanks.
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Understanding how it works
has never been so important.
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- Over on the other side.
- Right by that black boat?
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- Yeah, I can see dorsals.
- Yeah.
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Because it's changing
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under the pressure
of climate change.
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It's getting hotter and hotter,
without a doubt.
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And life within the ocean
affects the whole planet.
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Humpback whales
are ocean nomads.
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It's estimated they can migrate
over half a million miles
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in a lifetime.
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Each summer, Atlantic
populations come to feed
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in Stellwagen Bank
National Marine Sanctuary,
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where marine biologist
Dr Dave Wiley and his team
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are ready to meet them.
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There's a lot of activity, both
commercial whale-watching boats
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and recreational boats.
So we have to work around them,
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but we're looking for a group
of two or three.
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Dave's team wants to know
how climate change
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is affecting the humpbacks'
feeding behavior.
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To find out, they need to get
much nearer to the whales.
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You can't try to rush
any of it.
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That's why it takes sometimes,
you know, long periods of time
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before we actually
get close enough.
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It's a waiting game.
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There's going to be a lot
of this during this trip.
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After looking for whales
and working on whales,
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eating is probably the next
most common thing I do.
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Such a good sandwich.
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We're out here for like
eight to ten hours at a time.
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Of course,
everybody gets hungry.
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But we've noticed as soon as
you start to snack,
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that's when the whales pop up.
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- Oh!
- Look at that!
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Whales coming up.
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The scientists want to
attach sensors to the whales
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to collect important data.
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It's not an easy task
to put tags
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on every animal in a group,
but we've done it before
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and we're going to
try to do it again.
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Looks like the group's
coming up
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over there at our one o'clock.
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I have 403 here.
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The tags we're using
are called DTAGs.
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They're a really
sophisticated tag
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that goes on with suction cups
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so it doesn't hurt the animals
at all.
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So basically with these tags,
we know what the animals
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are doing with their body and
we know any sounds they make
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or anything they're hearing.
And they're also
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equipped with GPS so when
they come to the surface,
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they give us location. So it's
really a full suite of data.
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OK. Mike's ready to tag, everybody.
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Hold on.
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Here we go.
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That was good.
That worked well.
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It all comes together,
it's perfect.
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Some of the tags
are fitted with cameras
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to see what the whales
are doing.
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So we've got this great
backlog of data that shows us
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what the ocean was like
over the past 20 years,
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how it's changing
right at this very minute.
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And then as this project
continues into the future,
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we'll know how the animals
are behaving
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in an ocean that's going
to be really quite different
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than the one they've been
used to for the last...
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...hundreds and hundreds
and thousands of years.
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And by deploying
almost 300 tags since 2004,
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they've built a picture
of their feeding behavior.
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This gives the scientists
an important reference,
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allowing them to see if
anything unusual is happening.
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Since the study began,
the whales' feeding habits
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stayed fairly consistent...
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...until this year,
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when Dave and his team noticed
something different going on.
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The main prey item
for almost everything
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in the Stellwagen Bank
National Marine Sanctuary,
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and humpback whales
in particular,
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are a little fish
called sand lance.
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They're maybe six inches long,
as big around as your thumb,
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and they're here
in really big numbers.
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Sand lance normally stay
at the surface,
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but this year they are
keeping to the sea floor.
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Dave thinks that rising
ocean temperatures
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are causing the fish
to hibernate early.
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We haven't seen this before,
so this is already a sign
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that the ocean
is changing rapidly
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and in many ways
drastically.
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What happens to whales
matters,
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as they play an important role
in the ocean.
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So these animals are going
down and they're feeding
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on the bottom, but they
defecate at the surface.
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They spread huge amounts
of fertilizer
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all over the surface
of the ocean,
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where the sunlight is also,
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so you get this combination
of fertilizer and sunlight.
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This creates
the perfect conditions
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for a microscopic organism
to flourish.
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Phytoplankton.
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Just like plants,
they photosynthesize,
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absorbing carbon dioxide.
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And when conditions are right,
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their numbers explode.
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Carbon is now locked inside
these giant blooms
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instead of in the atmosphere.
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They can become so huge
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they are visible from space.
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The more whales you have,
the healthier the ocean is.
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One of the really great things
about humpback whales
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is how successful they've been
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in making a comeback
from commercial whaling.
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Some populations have
recovered by as much as 90%.
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If all the whales
came back to fill the ocean,
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the future would be brighter.
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They're fertilizing
the entire system
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so there's more life here
that can hold lots more carbon
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and draw down carbon dioxide
out of the atmosphere
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where we don't want it,
and into this ecological world
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that we're looking at, which is
exactly where we do want it.
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But there's more
to phytoplankton
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and the role they play
in the carbon drawdown story.
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I wish more people
knew about phytoplankton
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cos they really are the unsung
heroes of life on our planet.
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Dr Stephanie Henson
is a phytoplankton expert
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at the National Oceanography
Centre in England.
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Hiya. Here's a little sample.
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Thank you.
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So the bucket that we collected
this morning of water
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probably contains
more phytoplankton
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than the population of London
or New York.
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There's plenty of phytoplankton
and zooplankton in there.
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Oh, nice.
That's really great.
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Oh, there's all sorts of stuff
in there.
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- Yeah.
- Really nice. Great.
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But of course, they're feeding
the whole ocean, effectively.
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They're the base
of the marine food chain,
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and everything else
in the ocean depends on them.
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Phytoplankton are eaten
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by tiny creatures
called zooplankton.
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And they in turn
are eaten by larger predators.
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If there weren't
phytoplankton in the oceans,
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the marine food chain
as we know it today
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would completely collapse.
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As species eat each other,
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the carbon goes all the way
to the top.
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It's part of a process
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that scientists call
the biological pump.
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To understand its significance,
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we need to measure how much
life there is in the ocean.
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And that takes
innovative thinking.
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Marine ecologist Gael Mariani
is crunching the numbers.
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I know this code might look
pretty boring,
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but in fact it reveals
something really fascinating
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about fish, something
we didn't even know about
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three or four years ago
in science.
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And this research reveals
really new information
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about the role fish can play
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in transporting carbon
into a safe place.
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So fish are able to store
the carbon they eat
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in their own bodies.
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And you might say, hang on,
it's not a lot
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compared to a large species
like some whales.
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But it's biomass that matters.
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How many fish there are.
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By gathering data from
the fisheries around the world,
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Gael's results
give an astonishing picture
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of how ocean life helps us
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in the fight
against climate change.
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So we've made
some calculations,
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and we found out
fish of commercial interest
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are able to draw down
the equivalent
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to the annual emission of
50 million American citizens.
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It's massive.
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Fish numbers are far lower
than they could be.
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00:14:42,760 --> 00:14:45,160
By taking them out
of our ocean,
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we are reducing the power
of the biological pump.
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00:14:50,600 --> 00:14:54,000
We can also work out
how much carbon we've lost
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through fishing globally,
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00:14:55,560 --> 00:14:57,960
and the numbers
are quite remarkable.
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We calculate
industrial fisheries
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has reduced
the carbon drawdown potential
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of fish of commercial interest
by 50%.
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As well as
their carbon value,
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fish have a market value...
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...and 60 million people
around the world
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depend on the fishing industry.
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So we really have to move
toward a future where we change
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how we value fish. Like
this place just behind me,
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00:16:01,280 --> 00:16:04,480
who really cares about how
they source their produce.
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00:16:13,320 --> 00:16:15,120
Most of the life we know
in the ocean
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inhabits the surface layers.
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It draws the carbon in.
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00:16:24,840 --> 00:16:27,400
But the deeper the carbon goes,
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the better it is
for the planet.
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00:16:35,240 --> 00:16:38,080
The twilight zone
is a vast part of the ocean.
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It extends around the globe,
from pole to pole,
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00:16:42,080 --> 00:16:43,720
anywhere that the water's
deep enough.
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00:16:43,840 --> 00:16:47,240
If you go into
the ocean twilight zone,
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one of the most amazing things
you'll see
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is the incredible
what we call marine snowfall.
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00:16:54,200 --> 00:16:57,560
These tiny particles -
microscopic organisms,
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debris of animals
and plankton that have died
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and are drifting down slowly
through the ocean.
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00:17:05,960 --> 00:17:07,720
And as it's falling,
it's helping the ocean
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00:17:07,840 --> 00:17:10,920
to draw that carbon away
from the atmosphere.
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00:17:14,400 --> 00:17:17,920
These deep, dark waters
may seem lifeless.
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00:17:20,240 --> 00:17:21,720
But there are creatures here
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that look like
they're from an alien world.
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There are types
of organisms
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00:17:42,440 --> 00:17:45,440
that just look completely
different than those species
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00:17:45,560 --> 00:17:48,480
that we're used to seeing
in the upper ocean.
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00:17:56,640 --> 00:18:01,600
Many are luminescent,
so they sparkle like fireflies.
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00:18:08,440 --> 00:18:10,120
After many years of scientists
242
00:18:10,240 --> 00:18:12,800
slowly learning about the ocean
twilight zone, we thought
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00:18:12,920 --> 00:18:16,520
we had a pretty good idea
how many fish might live there.
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00:18:16,640 --> 00:18:20,200
But recent methods using sonar
have suggested
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00:18:20,320 --> 00:18:23,480
that we may have been way off,
and there may be
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00:18:23,600 --> 00:18:26,120
ten times more fish
than we previously thought.
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00:18:30,800 --> 00:18:34,840
Researchers from the Woods
Hole Oceanographic Institution
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00:18:34,960 --> 00:18:37,320
are on a mission to recover
an instrument
249
00:18:37,440 --> 00:18:41,920
that's been moored 1,800 feet
down in the deep ocean.
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00:18:42,040 --> 00:18:45,800
Winch left.
Bottom depth is 2802.
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It's been gathering
information
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00:18:50,240 --> 00:18:51,560
for the past two years,
253
00:18:51,680 --> 00:18:55,200
so should be full
of scientific revelation.
254
00:19:00,640 --> 00:19:02,160
So there's always
a chance
255
00:19:02,280 --> 00:19:04,520
that something can go wrong
during the recovery.
256
00:19:04,640 --> 00:19:08,880
The research is led by
oceanographer Dr Andone Lavery.
257
00:19:09,000 --> 00:19:11,760
This is the mooring
that's been out for two years.
258
00:19:11,880 --> 00:19:14,520
We are looking at
the acoustic sonars
259
00:19:14,640 --> 00:19:17,480
that are on the top
of the... of the mooring.
260
00:19:17,600 --> 00:19:19,920
There's a little bit of slime
on it, but not a lot
261
00:19:20,040 --> 00:19:22,400
considering it's been
down there for two years,
262
00:19:22,520 --> 00:19:24,480
so, uh, pretty exciting.
263
00:19:26,800 --> 00:19:28,440
This giant acoustic ball
264
00:19:28,560 --> 00:19:31,080
sends pulses of sound
through the water
265
00:19:31,200 --> 00:19:34,120
to paint a picture of
what's happening in the dark.
266
00:19:35,640 --> 00:19:37,600
We're interested
in the fishes
267
00:19:37,720 --> 00:19:39,440
in the ocean twilight zone,
and their migration
268
00:19:39,560 --> 00:19:43,560
from the deep waters down at
about 600 or 700m of depth.
269
00:19:43,680 --> 00:19:46,920
And as they come up to
the surface at night to feed,
270
00:19:47,040 --> 00:19:51,760
we're interested in how much
carbon they basically consume
271
00:19:51,880 --> 00:19:55,400
and draw down when they migrate
back down to the deep ocean
272
00:19:55,520 --> 00:19:57,360
during the daylight hours.
273
00:19:57,480 --> 00:20:01,640
We think that this is probably
the largest migration on Earth,
274
00:20:01,760 --> 00:20:06,640
the largest movement of animals
on this planet,
275
00:20:06,760 --> 00:20:08,120
which happens daily
276
00:20:08,240 --> 00:20:11,480
in this big wave
around the ocean.
277
00:20:13,280 --> 00:20:15,760
We're only just
discovering the secrets
278
00:20:15,880 --> 00:20:17,880
of the twilight zone...
279
00:20:18,000 --> 00:20:21,480
...and its role in drawing
carbon into the deep.
280
00:20:27,680 --> 00:20:29,800
I'm in a really slick area.
You got it?
281
00:20:29,920 --> 00:20:31,360
Yeah.
282
00:20:31,480 --> 00:20:33,080
OK.
283
00:20:33,200 --> 00:20:34,960
Finally get the data.
284
00:20:35,080 --> 00:20:38,640
A simple USB stick holds
the precious files.
285
00:20:38,760 --> 00:20:40,720
All the data is here.
286
00:20:40,840 --> 00:20:42,320
This is awesome.
287
00:20:42,440 --> 00:20:43,920
6,000 files.
288
00:20:45,480 --> 00:20:47,560
Could you put them up
on the big screen?
289
00:20:47,680 --> 00:20:49,160
Yeah.
290
00:20:49,280 --> 00:20:51,280
The reason we use
acoustics in the ocean
291
00:20:51,400 --> 00:20:53,600
to look at fishes
instead of using cameras,
292
00:20:53,720 --> 00:20:57,280
is that you can see quite
a long way with acoustics.
293
00:20:57,400 --> 00:21:01,120
With a camera, you can only see
fishes that are very close by.
294
00:21:01,240 --> 00:21:04,320
And we use that sound
and that really strong signal
295
00:21:04,440 --> 00:21:06,440
to count how many fish
we're seeing,
296
00:21:06,560 --> 00:21:09,880
and to characterize what kinds
of fishes they are.
297
00:21:14,720 --> 00:21:17,840
Studying this movement
of life is a formidable task...
298
00:21:19,280 --> 00:21:21,960
...but the team is making
headway.
299
00:21:22,080 --> 00:21:24,680
What we've learned about
the Twilight Zone
300
00:21:24,800 --> 00:21:28,080
suggests that it may help
the ocean draw down
301
00:21:28,200 --> 00:21:31,760
billions of metric tonnes
of carbon every year.
302
00:21:31,880 --> 00:21:34,600
As much as six times
the carbon dioxide
303
00:21:34,720 --> 00:21:38,160
emitted by automobiles
worldwide may be drawn down
304
00:21:38,280 --> 00:21:42,280
by the ocean
with the Twilight Zone's help.
305
00:21:42,400 --> 00:21:45,400
But it's very hard to study,
and there's a lot of things
306
00:21:45,520 --> 00:21:47,440
that we still don't know
about it.
307
00:21:49,640 --> 00:21:53,720
The race is on to improve
our understanding of the ocean.
308
00:21:55,160 --> 00:21:56,840
But it's huge.
309
00:21:56,960 --> 00:21:59,640
It covers 70% of our planet.
310
00:22:02,400 --> 00:22:05,720
There's only one way
to get a truly global picture
311
00:22:05,840 --> 00:22:07,280
of how it works.
312
00:22:15,000 --> 00:22:17,880
The ocean
is a challenging environment,
313
00:22:18,000 --> 00:22:19,960
which is one of the reasons why
we don't know
314
00:22:20,080 --> 00:22:23,560
as much as we probably should
about it.
315
00:22:26,040 --> 00:22:29,360
Dr Laura Lorenzoni is
a NASA scientist.
316
00:22:29,480 --> 00:22:33,400
She's preparing for
a historical rocket launch.
317
00:22:34,880 --> 00:22:37,080
A mission that aims to see
the ocean
318
00:22:37,200 --> 00:22:40,640
in a way that's impossible
from Earth.
319
00:22:40,760 --> 00:22:43,840
So important, the world will be
watching.
320
00:22:43,960 --> 00:22:46,640
Right now, I'm getting
ready because I'm going to be
321
00:22:46,760 --> 00:22:48,840
part of that broadcast tonight
for our mission
322
00:22:48,960 --> 00:22:50,280
that we're launching to space.
323
00:22:52,560 --> 00:22:54,320
This mission that we're
launching is really going to
324
00:22:54,440 --> 00:22:56,040
help us understand
that connection
325
00:22:56,160 --> 00:22:58,080
between the atmosphere
and the ocean
326
00:22:58,200 --> 00:22:59,680
and that carbon drawdown.
327
00:23:01,640 --> 00:23:03,720
What do I do?
Just stick it in my ear?
328
00:23:03,840 --> 00:23:05,320
As this is my first broadcast,
329
00:23:05,440 --> 00:23:08,560
I am obviously
a little nervous.
330
00:23:08,680 --> 00:23:10,360
What time do we start?
331
00:23:10,480 --> 00:23:13,680
You are looking live
at Space Launch Complex-40
332
00:23:13,800 --> 00:23:16,120
on Cape Canaveral
Space Force Station.
333
00:23:16,240 --> 00:23:18,000
It is such an honor to
be here with all of you
334
00:23:18,120 --> 00:23:20,040
near and far and witness
history in the making.
335
00:23:20,160 --> 00:23:23,080
NASA has studied
Earth's atmosphere in the past.
336
00:23:23,200 --> 00:23:24,760
What is it
that you hope to learn
337
00:23:24,880 --> 00:23:26,320
that you didn't already know?
338
00:23:26,440 --> 00:23:29,000
That is an excellent question.
339
00:23:29,120 --> 00:23:31,880
So this mission is really going
to be critical
340
00:23:32,000 --> 00:23:35,440
to nail down some of the gaps
of information that we have
341
00:23:35,560 --> 00:23:37,480
in terms of carbon cycling.
342
00:23:37,600 --> 00:23:39,520
We have a decent grasp on
343
00:23:39,640 --> 00:23:42,760
the physics
of this carbon drawdown,
344
00:23:42,880 --> 00:23:46,240
but the one thing that we're
not really 100% sure on
345
00:23:46,360 --> 00:23:50,640
is the biological part which is
carried out by phytoplankton.
346
00:24:00,320 --> 00:24:03,240
This mission is going to be
able to tell us
347
00:24:03,360 --> 00:24:05,240
what kind of plankton
and what species,
348
00:24:05,360 --> 00:24:07,040
and some species are
really important
349
00:24:07,160 --> 00:24:08,920
and can sequester
a lot more carbon
350
00:24:09,040 --> 00:24:10,400
faster than other species.
351
00:24:13,520 --> 00:24:15,560
Many on the
PACE spacecraft team
352
00:24:15,680 --> 00:24:17,880
now going outside to watch
this launch.
353
00:24:18,000 --> 00:24:19,760
Getting down
to the final seconds.
354
00:24:19,880 --> 00:24:21,440
15 seconds.
355
00:24:21,560 --> 00:24:23,640
This mission has been
in the works
356
00:24:23,760 --> 00:24:25,520
for about two decades.
357
00:24:25,640 --> 00:24:28,240
It has gone through the hands
of many hundreds of scientists
358
00:24:28,360 --> 00:24:30,080
and engineers, enabling us
359
00:24:30,200 --> 00:24:32,760
to see the ocean in brand-new
ways that we hadn't before.
360
00:24:32,880 --> 00:24:34,200
Minus 10.
361
00:24:34,320 --> 00:24:36,280
10, 9, 8,
362
00:24:36,400 --> 00:24:38,760
7, 6, 5,
363
00:24:38,880 --> 00:24:42,520
4, 3, 2, 1.
364
00:24:42,640 --> 00:24:44,520
Booster ignition,
365
00:24:44,640 --> 00:24:46,600
full power engines
366
00:24:46,720 --> 00:24:52,320
and liftoff of the Falcon 9
and PACE, helping keep pace
367
00:24:52,440 --> 00:24:55,520
with our ever-changing ocean
and atmosphere.
368
00:24:58,040 --> 00:25:00,360
Stage one
propulsion is now go.
369
00:25:06,160 --> 00:25:07,600
With every orbit,
370
00:25:07,720 --> 00:25:10,920
this satellite will scan
30 million square miles
371
00:25:11,040 --> 00:25:12,520
of the Earth's surface...
372
00:25:16,560 --> 00:25:19,480
...identifying different types
of phytoplankton...
373
00:25:21,000 --> 00:25:22,880
...and where the most
carbon-rich
374
00:25:23,000 --> 00:25:24,760
expanses of ocean exist.
375
00:25:26,560 --> 00:25:29,360
This mission is really
going to move us forwards.
376
00:25:29,480 --> 00:25:34,280
Because of the new measurements
that this mission is bringing,
377
00:25:34,400 --> 00:25:37,720
we have a lot of opportunities
at our fingertips
378
00:25:37,840 --> 00:25:42,920
to try to mitigate some of the
changes that our presence,
379
00:25:43,040 --> 00:25:46,200
our human presence,
has induced on the planet.
380
00:25:48,080 --> 00:25:49,480
We're about 10 seconds
381
00:25:49,600 --> 00:25:51,080
from the engine cut off.
382
00:26:01,160 --> 00:26:03,960
We can establish which
parts of our ocean
383
00:26:04,080 --> 00:26:07,240
are most important
for carbon drawdown.
384
00:26:09,600 --> 00:26:14,120
But they are often the most
sensitive to climate change.
385
00:26:23,840 --> 00:26:28,280
In the Southern Ocean, warming
temperatures are affecting
386
00:26:28,400 --> 00:26:31,040
a very different kind
of carbon system...
387
00:26:33,080 --> 00:26:38,200
...one so important it's studied
by scientists across the world.
388
00:26:44,080 --> 00:26:45,800
My name is Peter.
389
00:26:45,920 --> 00:26:49,320
I'm a research director at
the Flanders Marine Institute.
390
00:26:49,440 --> 00:26:51,160
I'm an oceanographer.
391
00:26:54,640 --> 00:26:57,520
So the Southern Ocean is the
most remote ocean
392
00:26:57,640 --> 00:26:59,360
of our planet.
393
00:26:59,480 --> 00:27:03,800
Now, you can think about the
Southern Ocean as a big lung.
394
00:27:03,920 --> 00:27:06,440
It breathes in and breathes
out carbon dioxide.
395
00:27:08,840 --> 00:27:11,800
Atmospheric pressure
pushes carbon dioxide
396
00:27:11,920 --> 00:27:14,280
into the ocean surface,
397
00:27:14,400 --> 00:27:17,760
a process called
"the physical pump".
398
00:27:20,880 --> 00:27:23,880
When it dissolves into the cold
Antarctic waters,
399
00:27:24,000 --> 00:27:26,120
it sinks down deep...
400
00:27:27,680 --> 00:27:31,120
...where it can be stored
for thousands of years.
401
00:27:37,640 --> 00:27:39,520
We know today that
the Southern Ocean
402
00:27:39,640 --> 00:27:42,120
is one of the most important
carbon sinks on this planet,
403
00:27:42,240 --> 00:27:45,480
slowing down the rate
of global warming this way,
404
00:27:45,600 --> 00:27:49,040
but what we do not really know
is how this is changing,
405
00:27:49,160 --> 00:27:52,160
how this heat and this carbon
uptake are changing over time,
406
00:27:52,280 --> 00:27:53,880
how variable they might be,
407
00:27:54,000 --> 00:27:57,040
and as climate change
progresses, what we can expect
408
00:27:57,160 --> 00:27:59,440
in the near and far future.
409
00:27:59,560 --> 00:28:03,840
There are few places on
Earth more difficult to study
410
00:28:03,960 --> 00:28:05,760
than the Southern Ocean.
411
00:28:07,040 --> 00:28:09,120
It's not for the faint-hearted.
412
00:28:11,280 --> 00:28:15,520
But Peter knows someone who's
always up for a challenge.
413
00:28:22,360 --> 00:28:24,440
Yeah, yeah, OK. Let's go.
414
00:28:25,800 --> 00:28:28,600
Boris Herrmann
is a professional yachtsman.
415
00:28:34,280 --> 00:28:35,720
Woohoo!
416
00:28:35,840 --> 00:28:38,120
Yeah, yeah. Pause.
417
00:28:38,240 --> 00:28:41,520
Yeah, I obviously love sailing
and racing on the ocean.
418
00:28:41,640 --> 00:28:43,720
That is my passion
since my childhood,
419
00:28:43,840 --> 00:28:45,560
and it became my job.
420
00:28:45,680 --> 00:28:48,800
I really feel at home
on the ocean.
421
00:28:48,920 --> 00:28:50,840
OK, let's have a look outside.
422
00:28:53,440 --> 00:28:55,200
Sea state is OK.
423
00:28:56,800 --> 00:28:59,160
And full main!
424
00:29:03,840 --> 00:29:06,480
Scientists need precise data
425
00:29:06,600 --> 00:29:08,760
about the exact
CO2 concentration
426
00:29:08,880 --> 00:29:10,920
in the ocean surface.
427
00:29:11,040 --> 00:29:13,080
This you cannot measure
by satellites.
428
00:29:13,200 --> 00:29:15,560
You need to go with some
sort of vessel.
429
00:29:15,680 --> 00:29:18,160
And there are no commercial
ships here,
430
00:29:18,280 --> 00:29:19,760
no cruise ships, etc.
431
00:29:19,880 --> 00:29:22,160
Here in the Southern Ocean,
us racing sailors,
432
00:29:22,280 --> 00:29:24,480
we are the only ones.
433
00:29:24,600 --> 00:29:28,240
Boris's boat gathers data
as it sails.
434
00:29:28,360 --> 00:29:30,960
Here's the ocean lab.
So, basically,
435
00:29:31,080 --> 00:29:33,160
there's a big pump here.
I can...
436
00:29:33,280 --> 00:29:36,400
If I put my hand on it, it's
warm, I can feel it pumping
437
00:29:36,520 --> 00:29:39,440
and I can hear the water
flowing through these tubes.
438
00:29:39,560 --> 00:29:41,280
It comes from the keel,
439
00:29:41,400 --> 00:29:43,480
it goes through here and then
goes back out into the sea.
440
00:29:43,600 --> 00:29:47,680
So it permanently tracks water
temperature, water salinity
441
00:29:47,800 --> 00:29:51,520
and, most importantly,
the CO2 concentration.
442
00:29:54,280 --> 00:29:55,760
With Boris's help,
443
00:29:55,880 --> 00:29:57,800
scientists will be able
to assess
444
00:29:57,920 --> 00:30:00,280
how the Southern Ocean
is changing.
445
00:30:03,760 --> 00:30:07,000
And what's really remarkable
about the data that Boris
446
00:30:07,120 --> 00:30:09,600
has collected is that he has
collected data
447
00:30:09,720 --> 00:30:11,400
in places where we haven't...
448
00:30:11,520 --> 00:30:13,360
...we've never, ever collected
449
00:30:13,480 --> 00:30:15,520
carbon dioxide measurements
before.
450
00:30:15,640 --> 00:30:17,680
I think the biggest gratitude
for Boris
451
00:30:17,800 --> 00:30:21,400
might be that his data will be
used for a very long time.
452
00:30:22,720 --> 00:30:24,880
So every measurement that is
taken today
453
00:30:25,000 --> 00:30:27,840
will not only be used tomorrow
or in the next years,
454
00:30:27,960 --> 00:30:30,560
it will be actually used
indefinitely.
455
00:30:30,680 --> 00:30:33,960
I'm very happy that we
can use the attention
456
00:30:34,080 --> 00:30:35,880
we get around this sport
457
00:30:36,000 --> 00:30:38,760
to make people speak about
climate solutions
458
00:30:38,880 --> 00:30:42,120
and hopefully inspire people
around this topic
459
00:30:42,240 --> 00:30:44,920
and hopefully have a positive
influence with this
460
00:30:45,040 --> 00:30:48,320
because we have no choice.
It's a race we must win.
461
00:31:02,320 --> 00:31:04,040
We shouldn't take it
for granted,
462
00:31:04,160 --> 00:31:06,880
because if we don't protect
those natural carbon sinks,
463
00:31:07,000 --> 00:31:08,680
may they be on land
or in the ocean,
464
00:31:08,800 --> 00:31:10,680
we will not have this service
in the future
465
00:31:10,800 --> 00:31:12,960
and will be a much bigger
problem.
466
00:31:13,080 --> 00:31:16,040
We want to keep a close eye
on the climate system,
467
00:31:16,160 --> 00:31:17,760
how it behaves, how it changes,
468
00:31:17,880 --> 00:31:20,360
because there are so many
things that we may not know,
469
00:31:20,480 --> 00:31:23,280
and so many changes that
we might otherwise overlook,
470
00:31:23,400 --> 00:31:26,720
and so we want to understand
our future we're heading to.
471
00:31:35,880 --> 00:31:38,360
Across the seas
of the world,
472
00:31:38,480 --> 00:31:41,840
signs of what's in store
are becoming more frequent.
473
00:31:48,520 --> 00:31:50,000
One of
the great advantages
474
00:31:50,120 --> 00:31:53,560
of being here
is that the Mediterranean
475
00:31:53,680 --> 00:31:55,400
is a laboratory for the world.
476
00:31:56,800 --> 00:31:59,840
So the Mediterranean is
undergoing remarkable changes.
477
00:31:59,960 --> 00:32:02,160
Its temperature has never
been hotter.
478
00:32:02,280 --> 00:32:06,600
The last few years we've had
extreme marine heat waves.
479
00:32:06,720 --> 00:32:10,360
And so what we see when we look
at the Mediterranean
480
00:32:10,480 --> 00:32:14,040
is a glimpse of the future
for the rest of the planet.
481
00:32:22,840 --> 00:32:26,320
If we don't figure out how to
stop the climate
482
00:32:26,440 --> 00:32:28,040
from changing more,
483
00:32:28,160 --> 00:32:30,680
if we don't figure out a way
of drawing down carbon,
484
00:32:30,800 --> 00:32:34,440
if we don't find a way of
working with nature,
485
00:32:34,560 --> 00:32:37,920
I don't know exactly
what the future will look like,
486
00:32:38,040 --> 00:32:41,240
but this is the place where we
will find out first.
487
00:32:45,840 --> 00:32:49,080
The ocean draws down
one-quarter
488
00:32:49,200 --> 00:32:54,800
of the 11 billion tonnes of
carbon that we emit each year.
489
00:32:59,520 --> 00:33:02,280
Extreme temperatures are
compromising
490
00:33:02,400 --> 00:33:04,160
this critical system.
491
00:33:08,080 --> 00:33:10,360
Giulio's work models
these effects
492
00:33:10,480 --> 00:33:14,880
to help us avoid the worst,
and prepare for what is coming.
493
00:33:16,200 --> 00:33:19,360
I actually think that
nature has been
494
00:33:19,480 --> 00:33:22,160
trying really hard
to help us.
495
00:33:22,280 --> 00:33:24,720
Now, it can't do that
by itself.
496
00:33:24,840 --> 00:33:27,480
It can't solve
all of our problems by itself.
497
00:33:27,600 --> 00:33:29,560
We have to stop emitting,
498
00:33:29,680 --> 00:33:32,840
and we have to help nature
do what it does.
499
00:33:44,440 --> 00:33:50,000
So the quest here is,
can we transform that nature?
500
00:33:50,120 --> 00:33:52,920
Can we power it up so that,
while we stop emitting,
501
00:33:53,040 --> 00:33:54,840
it then helps us draw back down
502
00:33:54,960 --> 00:33:58,600
the stuff that we put up in the
atmosphere in the first place?
503
00:34:04,360 --> 00:34:08,520
Restoring life
in our ocean is a huge task.
504
00:34:08,640 --> 00:34:10,840
It takes collaboration...
505
00:34:12,280 --> 00:34:14,320
...determination...
506
00:34:14,440 --> 00:34:16,000
...and innovation...
507
00:34:17,160 --> 00:34:21,360
...and some brilliant projects
are already under way.
508
00:34:28,720 --> 00:34:33,840
40% of us live along the
coastline... for good reason.
509
00:34:41,240 --> 00:34:43,680
On this small island
in Kenya,
510
00:34:43,800 --> 00:34:45,480
nature is still abundant.
511
00:34:53,760 --> 00:34:58,640
It's a favorite spot for local
fisher Hassan Shee Yusuf.
512
00:35:07,560 --> 00:35:10,000
What makes the catch so good
here
513
00:35:10,120 --> 00:35:12,640
is the surrounding
mangrove forest...
514
00:35:14,720 --> 00:35:16,760
...an ecosystem of tangled roots
515
00:35:16,880 --> 00:35:20,040
that only exists where the land
meets the sea.
516
00:35:25,920 --> 00:35:28,360
Working alongside local
fishers
517
00:35:28,480 --> 00:35:31,040
is marine biologist
Mwanarusi Mwafrica.
518
00:35:31,160 --> 00:35:33,960
What I love much about the
mangrove forest
519
00:35:34,080 --> 00:35:37,920
is because this is an ecosystem
that actually provided me
520
00:35:38,040 --> 00:35:39,440
with a job.
521
00:35:39,560 --> 00:35:43,080
Like my daily bread, yeah!
522
00:35:44,560 --> 00:35:48,000
Mangrove roots are very
essential because they provide
523
00:35:48,120 --> 00:35:50,200
a safe haven for juvenile fish
524
00:35:50,320 --> 00:35:53,400
from being carried away
by strong waves.
525
00:35:53,520 --> 00:35:56,840
So the fact of having more
trees, this means you're going
526
00:35:56,960 --> 00:36:00,640
to have more fish,
more fish in the future.
527
00:36:10,440 --> 00:36:13,840
Mangrove forests grow
along many tropical coastlines.
528
00:36:15,440 --> 00:36:18,600
And when it comes to harnessing
carbon dioxide,
529
00:36:18,720 --> 00:36:21,320
they are a superpower.
530
00:36:23,800 --> 00:36:27,720
These are very magical trees
because the services
531
00:36:27,840 --> 00:36:30,800
that they provide
are quite diverse.
532
00:36:30,920 --> 00:36:34,960
Mangroves are very efficient
at drawing down carbon.
533
00:36:35,080 --> 00:36:36,760
When we look at the capacity,
534
00:36:36,880 --> 00:36:38,480
it's almost seven to ten times
535
00:36:38,600 --> 00:36:41,040
compared to other
terrestrial trees.
536
00:36:43,840 --> 00:36:47,240
The interaction between
the trees, the tide and the mud
537
00:36:47,360 --> 00:36:50,480
creates a unique environment...
538
00:36:52,160 --> 00:36:55,520
...that not only means mangroves
can store more carbon per acre
539
00:36:55,640 --> 00:36:58,400
than any other type of forest
on Earth...
540
00:37:00,560 --> 00:37:03,960
...they keep it locked up
for millennia.
541
00:37:20,760 --> 00:37:24,240
But many mangroves have been
lost to deforestation
542
00:37:24,360 --> 00:37:25,840
and coastal development...
543
00:37:26,920 --> 00:37:29,000
...including here in Kenya.
544
00:37:42,840 --> 00:37:46,320
But the community here is now
turning things around...
545
00:37:48,200 --> 00:37:50,600
...through a new
business venture.
546
00:37:52,240 --> 00:37:54,120
So Vanga Blue Forest
547
00:37:54,240 --> 00:37:56,480
is part of a carbon-offsetting
scheme.
548
00:37:56,600 --> 00:38:00,000
So what happens is that
individuals, companies,
549
00:38:00,120 --> 00:38:04,560
businesses come to offset
with the project,
550
00:38:04,680 --> 00:38:07,960
in the essence that they are
promoting conservation efforts
551
00:38:08,080 --> 00:38:11,560
as much as they are offsetting
their own carbon emissions.
552
00:38:15,920 --> 00:38:18,920
If we fund nature now,
553
00:38:19,040 --> 00:38:23,760
these ecosystems will continue
to draw down carbon
554
00:38:23,880 --> 00:38:26,560
long after our emissions
have ceased.
555
00:38:42,520 --> 00:38:45,400
Since the project started,
556
00:38:45,520 --> 00:38:48,840
over 4,000 mangrove seedlings
have been planted.
557
00:38:52,800 --> 00:38:56,360
Carbon drawdowns of
Vanga mangrove forest
558
00:38:56,480 --> 00:39:00,280
are at 6,000 tonnes a year.
559
00:39:03,360 --> 00:39:06,800
Carbon sales are also
enriching the community.
560
00:39:09,280 --> 00:39:12,120
The local school now has
a science lab,
561
00:39:12,240 --> 00:39:14,360
and better facilities
562
00:39:14,480 --> 00:39:17,920
have helped its first student
get to university.
563
00:39:18,040 --> 00:39:20,280
What makes me to be
very proud
564
00:39:20,400 --> 00:39:22,920
working at Vanga Blue Forest
565
00:39:23,040 --> 00:39:27,320
is the fact that I'm at
the focal point of a change,
566
00:39:27,440 --> 00:39:31,680
the focal point of a movement
that is growing globally,
567
00:39:31,800 --> 00:39:34,400
and that movement is changing
the narrative
568
00:39:34,520 --> 00:39:36,720
of reversing climate change.
569
00:39:41,000 --> 00:39:43,440
Pioneering projects
like this
570
00:39:43,560 --> 00:39:47,800
show how we can boost nature
and carbon drawdown.
571
00:39:49,480 --> 00:39:52,360
But to really transform
our ocean,
572
00:39:52,480 --> 00:39:54,560
we need to work at scale,
573
00:39:54,680 --> 00:39:57,960
which requires even more
investment.
574
00:40:19,040 --> 00:40:23,320
I'm Julie Robinson and I'm
the Belize Program Director
575
00:40:23,440 --> 00:40:25,000
for the Nature Conservancy.
576
00:40:25,120 --> 00:40:27,440
This story does not start
in nature,
577
00:40:27,560 --> 00:40:30,000
it actually starts in
a boardroom.
578
00:40:34,440 --> 00:40:38,480
Belize had a long history
of being indebted.
579
00:40:38,600 --> 00:40:43,640
That actually became worse
during the COVID-19 pandemic,
580
00:40:43,760 --> 00:40:45,840
and tourism came
to a screeching halt.
581
00:40:45,960 --> 00:40:48,000
And so, essentially,
582
00:40:48,120 --> 00:40:50,560
we were in an economic crisis,
583
00:40:50,680 --> 00:40:55,400
and we also had a debt payment
looming.
584
00:40:55,520 --> 00:40:58,240
But Julie and her team
were working on a plan
585
00:40:58,360 --> 00:41:02,480
that was about to turn
this crisis into an opportunity
586
00:41:02,600 --> 00:41:04,280
to invest in nature.
587
00:41:04,400 --> 00:41:07,600
But I've spent way too much
time in boardrooms like this
588
00:41:07,720 --> 00:41:10,640
looking over Excel sheets
and on computer.
589
00:41:10,760 --> 00:41:13,480
What I'd really like to do
is take you out on the ocean
590
00:41:13,600 --> 00:41:16,920
and show you exactly
what we're protecting.
591
00:41:29,200 --> 00:41:31,320
So right now we're
in San Pedro, which is
592
00:41:31,440 --> 00:41:34,080
a really popular tourist
destination.
593
00:41:34,200 --> 00:41:36,200
It is a biodiversity hotspot,
594
00:41:36,320 --> 00:41:38,320
great for diving,
great for snorkeling.
595
00:41:41,400 --> 00:41:44,920
It was actually my childhood
out here that led me
596
00:41:45,040 --> 00:41:46,720
to be where I am today...
597
00:41:46,840 --> 00:41:48,520
Right over here looks good.
598
00:41:48,640 --> 00:41:51,120
...and at six years old,
I pretty much decided
599
00:41:51,240 --> 00:41:53,720
that I was going to dedicate
my life
600
00:41:53,840 --> 00:41:57,040
to saving the animals
in the water.
601
00:42:04,360 --> 00:42:06,320
In today's warming ocean,
602
00:42:06,440 --> 00:42:10,480
this beautiful reef needs
all the help it can get.
603
00:42:17,680 --> 00:42:20,840
But conservation at this
scale is expensive.
604
00:42:22,560 --> 00:42:26,560
Hard to prioritize when you've
got a large national debt.
605
00:42:31,880 --> 00:42:33,880
But Belize had a plan.
606
00:42:37,240 --> 00:42:40,400
We call it Blue Bonds
for ocean conservation.
607
00:42:40,520 --> 00:42:43,480
You could think of it
as refinancing
608
00:42:43,600 --> 00:42:47,920
or remortgaging a home, whereby
a bank is able to provide
609
00:42:48,040 --> 00:42:52,200
better terms and reduce
the overall payments,
610
00:42:52,320 --> 00:42:54,520
and then the savings
from that reduced payment
611
00:42:54,640 --> 00:42:56,960
is what goes towards
conservation.
612
00:42:58,800 --> 00:43:03,720
In this case, that was a figure
of $180 million US
613
00:43:03,840 --> 00:43:06,600
to be rolled out
over a 20-year period.
614
00:43:09,200 --> 00:43:11,160
When you borrow money
for your home,
615
00:43:11,280 --> 00:43:12,440
it's an investment, right?
616
00:43:12,560 --> 00:43:14,600
You renovate,
you look after it,
617
00:43:14,720 --> 00:43:17,000
and over time, it adds value.
618
00:43:29,440 --> 00:43:31,400
The challenge was really
coordinating
619
00:43:31,520 --> 00:43:33,760
all the various players,
all the partners,
620
00:43:33,880 --> 00:43:35,440
because something of this scale
621
00:43:35,560 --> 00:43:37,600
had just never been done
before.
622
00:43:40,840 --> 00:43:42,480
A big team effort
was needed
623
00:43:42,600 --> 00:43:44,280
for this ground-breaking deal
624
00:43:44,400 --> 00:43:47,920
to protect mile after mile
of ocean.
625
00:43:53,160 --> 00:43:57,480
And for its part of the
bargain, Belize had to commit
626
00:43:57,600 --> 00:43:59,800
to some serious goals.
627
00:43:59,920 --> 00:44:04,880
Protecting 30% of waters would
allow nature to thrive...
628
00:44:07,000 --> 00:44:09,760
...and better management would
support the people who rely
629
00:44:09,880 --> 00:44:12,040
on a healthy ocean.
630
00:44:14,680 --> 00:44:16,520
And look at it.
631
00:44:16,640 --> 00:44:19,920
When it's working,
it is absolutely paradise.
632
00:44:20,040 --> 00:44:23,360
Once the decision had been made
to move the deal forwards,
633
00:44:23,480 --> 00:44:27,040
it took only 18 months to get
everything in order,
634
00:44:27,160 --> 00:44:29,520
and now there's a model
for other countries.
635
00:44:30,760 --> 00:44:33,120
Around the world,
more projects like this
636
00:44:33,240 --> 00:44:34,800
are in the works,
637
00:44:34,920 --> 00:44:38,760
thanks to the success
of this inspirational deal.
638
00:44:38,880 --> 00:44:41,720
During a time during
climate crisis,
639
00:44:41,840 --> 00:44:44,560
we need things like this
more than ever before.
640
00:44:48,160 --> 00:44:50,920
When nature wins, we win,
641
00:44:51,040 --> 00:44:53,000
and so does
the carbon drawdown.
642
00:45:10,960 --> 00:45:14,760
But two-thirds of our
ocean, known as the high seas,
643
00:45:14,880 --> 00:45:17,280
fall outside of national laws.
644
00:45:19,120 --> 00:45:23,000
Without governance,
fishing can be a free-for-all.
645
00:45:26,360 --> 00:45:29,880
To protect nature in these
unmanaged waters
646
00:45:30,000 --> 00:45:32,000
takes international
collaboration...
647
00:45:34,280 --> 00:45:37,520
...based on accurate
scientific information.
648
00:45:40,040 --> 00:45:43,280
Ecologist Tristan Rouyer is
hoping to spot
649
00:45:43,400 --> 00:45:47,000
one of the world's most
valuable fish from the sky.
650
00:45:47,120 --> 00:45:49,000
Buckle up and let's go.
651
00:47:33,400 --> 00:47:36,840
Tristan is joining
Scientific Angler,
652
00:47:36,960 --> 00:47:39,680
a fleet of
recreational fishers
653
00:47:39,800 --> 00:47:42,040
competing to catch
a tuna for science.
654
00:47:57,480 --> 00:47:59,200
The Mediterranean Sea
655
00:47:59,320 --> 00:48:01,560
is home to one of the most
important
656
00:48:01,680 --> 00:48:05,120
Atlantic bluefin tuna fisheries
in the world...
657
00:48:06,840 --> 00:48:10,400
...making it a prime spot
to monitor numbers.
658
00:48:45,520 --> 00:48:49,040
Demand for bluefin
surged in the 1990s,
659
00:48:49,160 --> 00:48:51,600
which led to
their rapid demise.
660
00:48:53,400 --> 00:48:55,240
But against the odds,
661
00:48:55,360 --> 00:48:59,280
these highly prized fish are
making a comeback.
662
00:49:11,560 --> 00:49:12,840
Fabien!
663
00:49:20,120 --> 00:49:22,000
The competition is on!
664
00:49:57,080 --> 00:50:01,440
Small tuna like this are
the optimum size for tagging.
665
00:50:05,640 --> 00:50:09,840
The tag has been programmed
to last for over four years.
666
00:50:12,440 --> 00:50:15,320
It will show Tristan exactly
where the tuna goes
667
00:50:15,440 --> 00:50:18,160
as it heads out
to unprotected waters.
668
00:50:30,640 --> 00:50:31,720
Perfect.
669
00:50:43,440 --> 00:50:45,600
The resurgence of
bluefin tuna
670
00:50:45,720 --> 00:50:47,760
can't be taken for granted.
671
00:50:49,360 --> 00:50:53,360
Keeping their numbers up
requires collaboration.
672
00:50:53,480 --> 00:50:57,120
And Tristan's data feeds
into an international coalition
673
00:50:57,240 --> 00:50:59,760
of over 50 countries
and governments
674
00:50:59,880 --> 00:51:04,240
committed to preventing
overexploitation in the future.
675
00:51:31,120 --> 00:51:34,840
If Atlantic bluefin tuna
can come back from the brink,
676
00:51:34,960 --> 00:51:37,240
surely there's hope
we can return
677
00:51:37,360 --> 00:51:39,680
even more nature to abundance.
678
00:51:45,000 --> 00:51:48,480
In an ocean bursting with life,
679
00:51:48,600 --> 00:51:52,400
carbon can be drawn away
from the atmosphere.
680
00:51:54,400 --> 00:51:55,800
Carbon is it...
It's the...
681
00:51:55,920 --> 00:51:58,440
It's the thing of our time, right?
682
00:51:58,560 --> 00:52:01,240
It's the challenge that
all of us have to face.
683
00:52:02,880 --> 00:52:04,880
Climate change - it's something
that we have done,
684
00:52:05,000 --> 00:52:08,320
but it's also something
that we can fix.
685
00:52:09,960 --> 00:52:12,000
No matter where we live,
686
00:52:12,120 --> 00:52:15,640
the nature that surrounds us
can be restored.
687
00:52:16,840 --> 00:52:20,520
As a project lead,
it gives me the boost
688
00:52:20,640 --> 00:52:22,360
to always look forward
689
00:52:22,480 --> 00:52:25,360
to every morning waking up
with an open heart,
690
00:52:25,480 --> 00:52:27,960
because it gives me
the determination
691
00:52:28,080 --> 00:52:30,520
that whatever I'm doing
brings change.
692
00:52:30,640 --> 00:52:34,480
But it's not just down
to you and me.
693
00:52:34,600 --> 00:52:39,400
The world needs to act and
boost our entire living planet.
694
00:52:39,520 --> 00:52:41,200
It's a race against time
695
00:52:41,320 --> 00:52:45,080
to find solutions for
climate change.
696
00:52:45,200 --> 00:52:49,880
We have a choice to build
the world we want to live in.
697
00:52:51,840 --> 00:52:55,400
So if we can find a way of
investing in nature,
698
00:52:55,520 --> 00:52:57,880
of working with nature...
699
00:52:59,200 --> 00:53:02,200
...I think we'll be able to
overcome even this,
700
00:53:02,320 --> 00:53:05,680
which is the greatest challenge
of this century.
701
00:53:23,600 --> 00:53:27,400
The future I want is a future
where this sanctuary is filled
702
00:53:27,520 --> 00:53:29,640
with whales and filled
with sea birds
703
00:53:29,760 --> 00:53:31,560
and fish and just life,
704
00:53:31,680 --> 00:53:35,360
and so I want to make sure that
this sanctuary stays this way.
705
00:53:38,560 --> 00:53:42,360
I want this place to be like
this, you know, for ever.
706
00:53:44,640 --> 00:53:50,080
And for ever depends on
the future of nature.
56124
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