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♪ ♪
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WILL SMITH: I'm gonna
tell you about the
most incredible place.
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00:00:14,598 --> 00:00:17,966
It might be the weirdest
place in the whole universe...
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00:00:19,837 --> 00:00:25,374
Full of liquid rock, crystal
caves and alien landscapes...
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00:00:29,280 --> 00:00:31,580
And you know what?
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00:00:32,183 --> 00:00:34,850
You're walking on it.
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We think we know our home,
but once you've seen it
from space it hits you...
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CHRIS: I really wish
that everyone could see the
world the way that I've had
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a chance to see it.
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NICOLE: First you look at it
and really are wondering what
it even is that you're seeing.
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00:01:04,882 --> 00:01:07,883
-Just like I lived
my whole live in a semi
dark room and somebody
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00:01:07,985 --> 00:01:10,452
flipped on the lights.
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MAE: A living, breathing,
working planet.
14
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-It's all just
so wonderfully unlikely,
and yet it's here.
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WILL SMITH: Eight
astronauts, with over 1,000
days in space between them,
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can tell us how
being up there...
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Helped them to truly
understand what
goes on down here.
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The weird connections.
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The near misses.
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The lucky breaks.
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That built our amazing world.
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The strangest place in
the whole universe might
just be right here.
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Oh, you ready
this morning, huh?
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Here you go.
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Let's have some fun.
26
00:02:22,159 --> 00:02:23,826
There you go.
27
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We take Earth for granted.
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Come on, come on.
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Come on.
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We take so much for granted.
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Hey, come on.
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In fact, there's one thing
that comes so naturally we
don't even think about it.
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Breathing.
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Yes, come on.
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00:02:42,246 --> 00:02:44,146
Come on, come on.
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But if you knew even
half of what it takes to
make the oxygen we need,
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00:02:52,289 --> 00:02:54,356
it would take
your breath away.
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You wanna know
about breathing?
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Ask this guy.
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00:03:07,304 --> 00:03:12,274
-My first spacewalk,
holding on to the
outside of the spaceship,
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00:03:15,112 --> 00:03:18,847
with nothing except the
sound of my own breathing.
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In my one hand is my entire
link with my own history.
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Everything that's human, every
story that's going on down
on the surface of the world,
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everybody I've ever met,
with the whole universe
in the other direction.
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And then...
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I let go.
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That's when you really
appreciate the significance
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00:03:57,221 --> 00:04:00,489
of that thin blue line.
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00:04:06,597 --> 00:04:10,365
It contains everything
that's important to us.
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It contains life.
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00:04:18,175 --> 00:04:22,477
And then Houston called to
get back to work, I grabbed
back onto the handrail
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00:04:22,579 --> 00:04:25,380
but while I
was working, suddenly...
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I had a searing
pain in my left eye.
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Like somebody had
just stabbed me.
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My eye just snapped shut
and it started tearing up.
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00:04:38,729 --> 00:04:43,265
But the trouble is, without
gravity tears don't fall.
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The tear just gets
bigger and bigger.
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It got big enough that
it became a little lake of
water that went across the
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bridge of my nose...
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Into my other eye.
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00:05:02,886 --> 00:05:06,188
So I call down to
Houston, "Houston, I'm
having a problem here.
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I can't see.
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00:05:07,992 --> 00:05:10,258
I'm blinded in both eyes."
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00:05:10,361 --> 00:05:12,694
"What did
he just say?
He's blind?"
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00:05:12,930 --> 00:05:16,198
Houston looked at
what all the symptoms
were and said...
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00:05:16,300 --> 00:05:19,735
"Maybe it's the
worst-case problem.
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00:05:21,038 --> 00:05:24,639
You may have contamination
in your suit."
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00:05:25,809 --> 00:05:28,777
"And you're gonna
have to flush it out."
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I reached up, turned
this little valve, popped
it and suddenly could hear,
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"Ssssss, sssss".
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00:05:41,759 --> 00:05:47,729
As my precious supply
of oxygen hissed out into
the empty vacuum of space.
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00:05:50,134 --> 00:05:56,271
(heart monitor beeping)
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00:06:08,352 --> 00:06:10,585
(baby crying)
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There is nothing more
natural than breathing.
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Yet as far as we know,
this is the only planet
where that happens.
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The only planet with an
oxygen-rich environment.
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Without that, life
would be something
very different indeed.
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♪ ♪
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WILL SMITH: This is
Felipe's favorite place.
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Even though the air is toxic.
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The ground spits acid, and
there is no fresh water.
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00:07:34,938 --> 00:07:37,139
No birds sing here.
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No insects fly.
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No plants grow.
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WILL SMITH: It's hard
to imagine anywhere
less inviting...
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But Felipe has found
one thing that calls
this hellhole home.
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And it doesn't use oxygen.
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It lives in a lake of acid.
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♪ ♪
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♪ ♪
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-It's hard to
imagine sometimes just how
important oxygen is to us,
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00:09:36,593 --> 00:09:39,861
as the way to release energy.
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Every time I breathe
in, oxygen-rich air mixes
with the food I've eaten
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00:09:47,170 --> 00:09:49,638
and creates energy.
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00:09:49,740 --> 00:09:53,708
Power that enables
larger, more complex
creatures to exist.
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WILL SMITH: Our planet is
literally bursting with life,
so how on earth is there
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00:10:07,691 --> 00:10:10,525
enough oxygen for everyone?
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00:10:10,994 --> 00:10:14,029
The answer takes in some
pretty surprising stuff.
99
00:10:15,299 --> 00:10:20,201
Giant dust storms,
tiny snowflakes,
flying rivers;
100
00:10:21,738 --> 00:10:25,707
and the most important living
thing you've never heard of.
101
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But it begins in a desert.
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A desert made of salt.
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♪ ♪
104
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(chopping)
105
00:11:15,759 --> 00:11:18,927
(speaking in native language)
106
00:11:59,136 --> 00:12:02,871
WILL SMITH: The people
here rely on this
desert and so do we.
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But not because of the salt.
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(wind)
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♪ ♪
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JEFF: Dust storms can
be pretty amazing when
you see them from space.
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And sometimes they're huge.
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JERRY: You know, I had seen
little dust storms blowing
and you kinda look hard.
113
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This you didn't
need to look hard.
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00:13:00,263 --> 00:13:06,034
It was a continent
of Northern Africa basically
obscured by thick brown dust.
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00:13:07,204 --> 00:13:10,238
And as I orbited, I
couldn't wait to come back.
116
00:13:11,241 --> 00:13:14,509
And then when I did,
I saw that dust storm
that was over Africa now
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00:13:14,611 --> 00:13:18,046
over the Atlantic Ocean.
118
00:13:19,950 --> 00:13:23,351
And my next orbit
I see it hitting the
coast of South America.
119
00:13:41,571 --> 00:13:46,808
-Every year about
27 million tons of that
African dust we can see
120
00:13:46,910 --> 00:13:52,647
from orbit drops out of the
sky into the Amazon Basin.
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And it turns out,
it's the perfect fertilizer.
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♪ ♪
123
00:14:17,807 --> 00:14:23,811
And as they grow, the
plants and the trees turn
carbon dioxide into oxygen.
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One single tree can
produce enough oxygen
to support two people.
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00:14:39,629 --> 00:14:42,864
And the Amazon Rainforest...
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Is ten times the size of Texas,
127
00:14:47,804 --> 00:14:51,372
producing 20 times
more oxygen than all the
128
00:14:51,474 --> 00:14:55,376
people on the surface of the
Earth could consume.
129
00:14:57,514 --> 00:15:01,549
But, not one breath of
it leaves the Amazon.
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00:15:19,069 --> 00:15:24,572
There are so many animals
living in the Amazon Basin
that the life there uses all
131
00:15:24,674 --> 00:15:27,075
that oxygen up.
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00:15:31,181 --> 00:15:35,083
WILL SMITH: For all these
years I've been thinking
the rainforest is the lungs
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00:15:35,185 --> 00:15:37,885
of the planet.
134
00:15:39,022 --> 00:15:43,024
Now sure, it makes a lot of
oxygen, but it uses it all.
135
00:15:45,395 --> 00:15:51,099
The rainforest does
help us breathe, but
not because of air.
136
00:15:51,835 --> 00:15:56,337
There's a river in the
Amazon, no, not that one,
there's another river,
137
00:15:57,774 --> 00:15:59,440
a river in the sky.
138
00:16:14,071 --> 00:16:17,205
WILL SMITH: For the most
part, I know this world from
standing on its surface.
139
00:16:19,877 --> 00:16:22,978
I mean, I've been
up to the top of the
Empire State Building,
140
00:16:23,080 --> 00:16:27,516
put my quarter in the scope,
and I've even jumped out
of planes a couple times.
141
00:16:30,721 --> 00:16:33,055
But that's nothing.
142
00:16:33,290 --> 00:16:38,293
The International
Space Station clocks
in at 1 million feet.
143
00:16:47,071 --> 00:16:51,239
CHRIS: Whenever there's a
free moment on the spaceship,
we try and get to the window
144
00:16:51,675 --> 00:16:53,408
to take pictures.
145
00:16:53,510 --> 00:16:57,946
And during my three
space flights, I took
about 45,000 photographs.
146
00:17:04,722 --> 00:17:07,823
And some parts of
the world are easy to
take pictures of...
147
00:17:09,159 --> 00:17:11,827
Like the outback of Australia.
148
00:17:12,129 --> 00:17:14,663
It's always a sunny day there.
149
00:17:14,765 --> 00:17:18,500
But there are parts of the
world that you almost never
get a good picture of.
150
00:17:21,004 --> 00:17:23,638
One of those is
the Amazon Basin.
151
00:17:23,741 --> 00:17:26,374
So it makes ya think...
152
00:17:26,477 --> 00:17:29,311
What's going on down there?
153
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♪ ♪
154
00:17:59,109 --> 00:18:03,011
WILL SMITH: For the last
ten years, Rosa has been
working in the Amazon,
155
00:18:03,514 --> 00:18:08,383
uncovering the surprising
way the rainforest helps
the whole planet breathe.
156
00:18:51,228 --> 00:18:54,563
WILL SMITH: She's not
kidding about special.
157
00:18:59,002 --> 00:19:03,038
This is the tallest structure
in all South America.
158
00:19:11,748 --> 00:19:15,517
Rosa has tried to climb
this tower twice before,
159
00:19:15,619 --> 00:19:17,853
but she's never
made it to the top.
160
00:20:00,898 --> 00:20:07,235
♪ ♪
161
00:20:17,948 --> 00:20:20,582
♪ ♪
162
00:20:20,684 --> 00:20:25,086
WILL SMITH: Now that's
a pretty cool climb, but
something else is rising too.
163
00:20:34,898 --> 00:20:39,401
If you could look
inside the trees...
164
00:20:39,503 --> 00:20:44,639
You'd see water sucked
up from the forest floor.
165
00:20:54,518 --> 00:20:59,554
♪ ♪
166
00:21:09,633 --> 00:21:14,469
♪ ♪
167
00:21:24,381 --> 00:21:28,950
♪ ♪
168
00:21:29,219 --> 00:21:32,854
When the water hits the
top, the combination
of sun and wind...
169
00:21:34,992 --> 00:21:38,026
Turns it into a mighty river.
170
00:21:39,096 --> 00:21:42,263
A flying river.
171
00:22:12,796 --> 00:22:15,530
CHRIS: This river of cloud
flows across South America,
172
00:22:16,800 --> 00:22:19,868
obscuring everything
beneath it...
173
00:22:23,774 --> 00:22:26,574
Until it runs
into a brick wall.
174
00:22:28,879 --> 00:22:32,747
5,500 miles long and
up to 4 miles high.
175
00:22:34,451 --> 00:22:36,484
The Andes.
176
00:22:39,222 --> 00:22:43,992
The clouds condense
into raindrops, which
then race down the slopes and
177
00:22:44,094 --> 00:22:48,129
flow directly back into
the Amazon Basin...
178
00:22:52,269 --> 00:22:56,004
Eroding the rock and
turning it into sediment...
179
00:22:58,008 --> 00:23:03,344
Until all those nutrients
are dumped into the ocean
and a whole other world.
180
00:23:26,136 --> 00:23:29,204
And waiting for
those sediments is an
extraordinary organism,
181
00:23:30,607 --> 00:23:32,440
four times thinner
than a human hair.
182
00:23:35,045 --> 00:23:37,312
It's called a diatom.
183
00:23:47,557 --> 00:23:51,793
Diatoms are the secret to
the Earth's oxygen supply.
184
00:23:55,532 --> 00:24:00,768
They use silica from
the ground up rock
to create new shells,
185
00:24:00,871 --> 00:24:04,472
which allows them
to reproduce.
186
00:24:05,408 --> 00:24:08,676
Their population
doubles every day...
187
00:24:09,980 --> 00:24:13,515
And they begin to
photosynthesize...
188
00:24:14,751 --> 00:24:19,354
Each one starting
to produce oxygen.
189
00:24:21,858 --> 00:24:23,591
WILL SMITH: Take a breath.
190
00:24:24,361 --> 00:24:26,427
Now take another.
191
00:24:26,763 --> 00:24:28,596
Now think about this:
192
00:24:28,698 --> 00:24:31,833
one of those breaths
was entirely provided by
193
00:24:31,935 --> 00:24:35,403
those little fellas
under the sea.
194
00:24:38,275 --> 00:24:43,778
-Looking at the oceans
from space, sometimes you
see a local area that's
195
00:24:43,880 --> 00:24:46,814
an entirely different color.
196
00:24:46,917 --> 00:24:50,351
And amazingly enough,
what you're looking at
is microscopic life.
197
00:24:52,822 --> 00:24:57,892
Diatom blooms that reflect
the light differently, so
that they show up from space.
198
00:25:00,630 --> 00:25:02,897
JEFF: Biggest one I think
I ever saw was huge.
199
00:25:04,100 --> 00:25:06,301
It covered hundreds of miles.
200
00:25:06,636 --> 00:25:08,102
JERRY: You know,
when you swim in the ocean
201
00:25:08,205 --> 00:25:10,171
you don't notice
the diatoms around you.
202
00:25:10,273 --> 00:25:13,908
But when you're
in space, you see the
vibrant colors of life.
203
00:25:16,146 --> 00:25:19,514
NICOLE: It's just so stunning,
the blues and the greens.
204
00:25:19,616 --> 00:25:24,085
But also, like, wow, those
things are keeping us alive.
205
00:25:27,924 --> 00:25:29,791
WILL SMITH: But you know what?
206
00:25:29,893 --> 00:25:33,328
Diatoms are important not
just because of what they
do when they're alive,
207
00:25:33,997 --> 00:25:36,764
but also what they
do once they're dead.
208
00:25:47,696 --> 00:25:50,464
CHRIS: I spent 166
days off the world.
209
00:25:52,334 --> 00:25:56,203
Underneath you,
the planet is silently,
210
00:25:56,305 --> 00:25:58,238
intimately revealing
itself to you,
211
00:25:58,541 --> 00:26:01,608
more and more,
every single time around.
212
00:26:03,979 --> 00:26:08,482
And from a spaceship, Earth
is definitely the Blue Planet.
213
00:26:12,221 --> 00:26:15,189
And pretty much
everywhere that there's
water, there's diatoms.
214
00:26:17,560 --> 00:26:20,661
There are trillions
of them in every ocean,
215
00:26:21,931 --> 00:26:25,165
and they can't all
rely on flying rivers.
216
00:26:26,869 --> 00:26:31,839
So diatoms around the world
have to get their nutrients
in different ways.
217
00:26:33,242 --> 00:26:37,044
Some about as far away
from tropical rainforests
as you can get.
218
00:26:50,059 --> 00:26:52,192
HEIDI (over radio):Okay guys, off you go.
219
00:27:02,938 --> 00:27:05,372
Okay, yeah, slow down...
220
00:27:10,646 --> 00:27:12,779
You can stop right there, yeah.
221
00:27:21,223 --> 00:27:22,823
(inaudible)
222
00:27:23,092 --> 00:27:25,292
MAN (over radio): Okay.
223
00:27:25,394 --> 00:27:27,728
WILL SMITH: These
glaciers are unusual.
224
00:27:27,830 --> 00:27:30,163
They can slide
in sudden spurts.
225
00:27:31,200 --> 00:27:36,436
Still too slow
to see in real time, but
fast enough to hear...
226
00:27:38,741 --> 00:27:41,108
if you know how to listen.
227
00:27:44,413 --> 00:27:47,781
(low frequency rumble)
228
00:27:50,653 --> 00:27:55,489
Sometimes they move
300 times faster than
their normal glacial pace.
229
00:27:59,094 --> 00:28:03,664
Heidi can hear them crushing
a huge amount of rock,
as they grind their way
230
00:28:03,766 --> 00:28:06,266
down the valley.
231
00:28:08,170 --> 00:28:12,472
And when ice meets sea,
it makes a familiar sound.
232
00:28:38,167 --> 00:28:41,335
WILL SMTH: The popping
is a heads up for the team.
233
00:28:41,737 --> 00:28:44,104
The ice face is
about to crash.
234
00:28:44,707 --> 00:28:47,074
(bubbles popping)
235
00:28:47,176 --> 00:28:50,377
HEIDI: I'm hearing
increased activity, you
need to come back, okay?
236
00:29:16,572 --> 00:29:19,640
(bubbles popping)
237
00:29:36,959 --> 00:29:38,592
Wow!
238
00:29:45,801 --> 00:29:48,969
♪ ♪
239
00:29:49,338 --> 00:29:53,440
WILL SMITH: Diatom
dinner time.
240
00:29:54,777 --> 00:29:58,645
Now sometimes these
glaciers move really fast,
dumping tons and tons of
241
00:29:58,747 --> 00:30:01,481
nutrients into the sea.
242
00:30:01,583 --> 00:30:03,817
Boom!
243
00:30:04,286 --> 00:30:07,087
Sparking a feeding frenzy
and a population explosion.
244
00:30:12,327 --> 00:30:17,431
But then, just as
quickly as it started,
dinner time is over.
245
00:30:19,101 --> 00:30:24,671
The glaciers come to a
grinding halt and lie dormant,
sometimes for decades.
246
00:30:25,574 --> 00:30:28,008
Boom becomes bust.
247
00:30:34,983 --> 00:30:39,352
-When the nutrients run
out, the blooms fade and
most of the diatoms die.
248
00:30:46,495 --> 00:30:50,464
Their carcasses slowly
fall to the ocean floor...
249
00:30:52,434 --> 00:30:56,603
Where they carpet it in a
layer half a mile thick.
250
00:30:58,207 --> 00:31:01,441
We call it 'marine
snow', and that's exactly
what it looks like.
251
00:31:03,512 --> 00:31:05,846
Snowflakes.
252
00:31:07,983 --> 00:31:10,550
But unlike snowflakes,
253
00:31:10,652 --> 00:31:16,389
they never melt and
over millions of
years the sea beds rise...
254
00:31:19,294 --> 00:31:24,297
The ocean levels fall
and the ocean floor
becomes a salty desert.
255
00:31:30,172 --> 00:31:34,040
The desert that blows all
the way to the Amazon...
256
00:31:35,811 --> 00:31:38,111
That was once a sea bed.
257
00:31:38,213 --> 00:31:41,281
And the dust that makes
the rainforest grow?
258
00:31:43,519 --> 00:31:46,286
Diatom shells.
259
00:31:50,793 --> 00:31:54,494
It just goes to show how
incredibly interlinked
everything is.
260
00:31:57,533 --> 00:32:01,368
-There is absolutely nothing
on one side of the planet
that isn't connected in
261
00:32:01,470 --> 00:32:04,137
some way with the other
side of the planet.
262
00:32:08,577 --> 00:32:12,979
MAE: It's astounding how
all the systems down there
must work together in order
263
00:32:13,081 --> 00:32:15,315
for us to breathe.
264
00:32:22,357 --> 00:32:24,991
WILL SMITH: Which is great...
265
00:32:25,360 --> 00:32:28,228
But you only have to mess
with oxygen a little bit
266
00:32:28,330 --> 00:32:31,331
for things to start
going really wrong.
267
00:32:34,628 --> 00:32:38,564
ee, two, one.
268
00:32:39,133 --> 00:32:42,134
Lift off, lift off.
269
00:32:44,071 --> 00:32:50,209
♪ CHRIS: Though I've
flow 100,000 miles,
I'm feeling very still. ♪
270
00:32:53,848 --> 00:32:59,685
♪ Planet Earth is blue and
there's nothing left to do. ♪♪
271
00:33:10,231 --> 00:33:13,999
I love the fact that the
Earth has a blue sky.
272
00:33:18,205 --> 00:33:21,507
You can look up
and all of the various
shades of it, you know,
273
00:33:21,775 --> 00:33:23,909
the deepness of it and
the way the colors change
274
00:33:24,011 --> 00:33:29,848
close to the horizon
and that's everything
that we breathe,
275
00:33:29,950 --> 00:33:33,185
and keeps us alive.
276
00:33:33,287 --> 00:33:37,823
And you sort of fool
yourself into thinking,
it's really, really deep.
277
00:33:37,925 --> 00:33:41,026
Like it goes on
sort of forever.
278
00:33:44,298 --> 00:33:48,267
But when you're on
board a spaceship and
you look straight down,
279
00:33:50,204 --> 00:33:53,238
you hardly see the
atmosphere at all.
280
00:33:54,041 --> 00:33:58,343
It's only when you look
to the horizon that you
can see just how thin our
281
00:33:58,445 --> 00:34:01,513
atmosphere truly is.
282
00:34:01,615 --> 00:34:06,785
The thinnest of
delicate blue lines.
283
00:34:07,321 --> 00:34:11,823
It's because the gravity of
the Earth is pulling every
single one of those air
284
00:34:11,926 --> 00:34:16,228
molecules and pressing
it against the ground.
285
00:34:16,330 --> 00:34:20,198
But the further up you
go, the thinner it gets.
286
00:34:20,834 --> 00:34:25,504
It's sort of like if you
pluck a string on a guitar...
287
00:34:26,140 --> 00:34:28,607
When does the note stop?
288
00:34:29,410 --> 00:34:32,144
And our atmosphere is
like that guitar string.
289
00:34:32,947 --> 00:34:35,480
It just gets less and
less the higher you go.
290
00:34:38,586 --> 00:34:42,187
But what's surprising is,
how fast that happens.
291
00:34:43,757 --> 00:34:49,261
That blue line is so thin
that you can walk to where
the oxygen starts to run out.
292
00:34:59,540 --> 00:35:05,377
♪ ♪
293
00:35:14,655 --> 00:35:20,859
♪ ♪
294
00:35:22,896 --> 00:35:29,167
WILL SMITH: Being a doctor
in La Rinconada means that
you have 25,000 patients,
295
00:35:31,305 --> 00:35:34,873
living year-round in a town
as high as Everest base-camp.
296
00:36:17,584 --> 00:36:23,088
WILL SMITH: When Spanish
settlers first arrived here,
the lack of oxygen killed many
297
00:36:23,757 --> 00:36:27,059
of their babies at birth.
298
00:36:35,302 --> 00:36:38,937
Yet, people still live here.
299
00:36:40,274 --> 00:36:43,475
They still work here.
300
00:36:44,278 --> 00:36:49,047
Because in these mountains,
there's something that's
lured people through history.
301
00:36:59,526 --> 00:37:03,228
The promise of gold.
302
00:37:12,139 --> 00:37:14,639
This is the limit though.
303
00:37:14,742 --> 00:37:18,877
Humans can't live any higher.
304
00:37:23,083 --> 00:37:26,485
CHRIS: Without enough
oxygen, our organs can
start shutting down...
305
00:37:29,356 --> 00:37:33,125
And it can happen
surprisingly quickly.
306
00:37:34,194 --> 00:37:39,264
So astronauts actually
train to recognize their own
symptoms of a lack of oxygen.
307
00:37:40,167 --> 00:37:42,367
Of hypoxia.
308
00:37:42,803 --> 00:37:45,270
In my case,
there's a slight dizziness.
309
00:37:46,006 --> 00:37:48,373
My vision starts to get
a little bit narrow.
310
00:37:48,675 --> 00:37:51,843
The colors become
a little more brittle,
311
00:37:52,613 --> 00:37:54,846
like maybe a certain
type of painter's way
312
00:37:54,948 --> 00:37:57,582
of using only the
primary colors.
313
00:37:57,684 --> 00:37:59,751
Sound changes a little for me.
314
00:37:59,853 --> 00:38:04,456
It becomes a little bit
more staccato, sort of a
snappy sound to everything
315
00:38:05,159 --> 00:38:06,591
that's going on around me.
316
00:38:06,693 --> 00:38:08,560
And as soon as I put all
those things together,
317
00:38:08,662 --> 00:38:11,062
I realize I'm running
out of oxygen.
318
00:38:12,299 --> 00:38:14,099
Houston, I'm having a
serious problem here.
319
00:38:14,201 --> 00:38:15,400
Serious problem.
320
00:38:15,502 --> 00:38:16,802
Blinded in both eyes.
321
00:38:16,904 --> 00:38:18,103
"What did he just say?"
322
00:38:18,205 --> 00:38:20,639
Can't see, purge your oxygen.
323
00:38:20,741 --> 00:38:23,308
My precious oxygen.
324
00:38:24,044 --> 00:38:29,481
I wasn't really sure how that
was gonna turn out, but as
the oxygen hissed through and
325
00:38:30,484 --> 00:38:34,920
out my purge valve,
the tears that were coming
out of my tear ducts
326
00:38:35,989 --> 00:38:38,857
slowly started evaporating.
327
00:38:39,493 --> 00:38:44,196
My vision began to return,
bit by bit, and what had
caused it was pretty simple.
328
00:38:45,032 --> 00:38:50,602
It was the anti-fog on my
visor had been picked up by
floating water in my suit and
329
00:38:51,004 --> 00:38:53,538
gotten into my eye.
330
00:38:54,441 --> 00:38:59,578
With confidence, I could
reach up and close the
valve and stop venting my
331
00:38:59,680 --> 00:39:02,347
precious oxygen out to
the rest of the universe.
332
00:39:07,888 --> 00:39:14,059
It's vital that we get
enough oxygen; but too much
can be just as dangerous.
333
00:39:27,975 --> 00:39:30,775
You see it when you blow
on a little tiny fire.
334
00:39:33,046 --> 00:39:37,916
Just blowing that little
bit of oxygen turns that
tiny spark into a flame.
335
00:39:43,257 --> 00:39:47,325
And it's exactly the same
for the whole planet.
336
00:39:50,931 --> 00:39:54,399
A rise in oxygen levels
can threaten life on Earth.
337
00:40:02,276 --> 00:40:05,944
WILL SMITH: 300 million years
ago, there was a lot more
oxygen in the atmosphere.
338
00:40:06,847 --> 00:40:10,849
So much that the
planet just burned.
339
00:40:14,655 --> 00:40:18,189
But don't think that
danger's all in the past.
340
00:40:20,360 --> 00:40:23,795
Too much oxygen and we fry.
341
00:40:25,666 --> 00:40:28,266
Too little and we choke.
342
00:40:29,636 --> 00:40:33,271
We're walking a tightrope
with death on either side,
343
00:40:34,274 --> 00:40:35,874
and just like a tightrope walker
344
00:40:35,976 --> 00:40:38,843
the only thing that can
save us is balance.
345
00:40:50,008 --> 00:40:52,342
CHRIS: Balance is crucial...
346
00:40:54,746 --> 00:40:57,714
For the makeup of
the atmosphere, and
for life itself.
347
00:41:02,187 --> 00:41:06,056
The thing is, we don't
fully understand how
the Earth manages it.
348
00:41:08,393 --> 00:41:13,964
Despite diatoms having
to wait for glaciers and
South American trees having
349
00:41:14,766 --> 00:41:16,833
to wait for African dust,
350
00:41:16,935 --> 00:41:21,771
and despite the fact
that human population has
been steadily increasing,
351
00:41:21,873 --> 00:41:26,543
the relative amount of
oxygen in the atmosphere has
been surprisingly constant.
352
00:41:30,449 --> 00:41:35,919
MIKE: For millions of
years, oxygen has made up
20.95% of our atmosphere.
353
00:41:37,255 --> 00:41:40,957
MAE: Exactly 20.95%.
354
00:41:42,794 --> 00:41:48,131
JERRY: Everything's somehow
buffering out and keeping
things pretty darn stable.
355
00:41:57,776 --> 00:42:03,980
♪ ♪
356
00:42:13,658 --> 00:42:19,129
♪ ♪
357
00:42:31,610 --> 00:42:37,647
(chanting inaudibly)
358
00:43:08,046 --> 00:43:13,383
WILL SMITH: 100,000
Buddhists gather here for
the festival of Magha Puja.
359
00:43:19,558 --> 00:43:22,725
Each one lights a candle.
360
00:43:22,994 --> 00:43:27,230
They celebrate with their
flames at a temple made
from a million Buddha's.
361
00:43:44,349 --> 00:43:50,120
(chanting inaudibly)
362
00:43:58,930 --> 00:44:05,301
♪ ♪
363
00:44:33,231 --> 00:44:36,833
WILL SMITH: Every breath we
take, 16 breaths a minute,
364
00:44:39,738 --> 00:44:42,639
23,000 breaths a day,
365
00:44:42,741 --> 00:44:48,444
every inhale, every exhale
of that precious oxygen
366
00:44:49,648 --> 00:44:56,019
couldn't happen without
earth, water, wind and fire.
367
00:45:07,032 --> 00:45:12,468
The whole planet works as one
to create that thin blue line.
368
00:45:17,609 --> 00:45:22,612
The mark of a living
world we've seen nowhere
else in the universe.
369
00:45:32,324 --> 00:45:35,558
-I really wish that
everyone could see the
world the way that I've
370
00:45:35,961 --> 00:45:38,962
had a chance to see it.
371
00:45:43,134 --> 00:45:47,570
You have to wrench yourself
away from the wonder
and the strangeness of it.
372
00:45:53,144 --> 00:45:56,412
And the beauty of space
flight is you come back
373
00:45:56,514 --> 00:46:00,717
with a real sense that
this Earth is one place.
374
00:46:01,987 --> 00:46:04,420
One shared place.
375
00:46:08,059 --> 00:46:11,327
We're all crew mates
on the same ship.
376
00:46:17,068 --> 00:46:23,373
WILL SMITH: We're not just
rare, we're not just special,
we are unique and that's what
377
00:46:24,075 --> 00:46:27,577
makes this One Strange Rock.
378
00:46:37,389 --> 00:46:40,023
Next time on One
Strange Rock...
379
00:46:40,425 --> 00:46:44,694
Our paradise planet came from
collisions, carnage and chaos.
380
00:46:45,697 --> 00:46:48,598
And the impact is
still shaping us.
381
00:46:58,243 --> 00:47:00,543
Captioned by Cotter
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