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1
00:00:13,700 --> 00:00:17,400
Well, 16, the launch team wishes you
good luck and Godspeed.
2
00:00:18,200 --> 00:00:21,400
We appreciate that,
and we can't do without you.
3
00:00:27,000 --> 00:00:28,300
We have a launch commit,
and we have a lift-off.
4
00:00:28,500 --> 00:00:30,700
The swing arm is moving back.
We've cleared the tower.
5
00:00:34,400 --> 00:00:35,900
Roger, cleared the tower.
6
00:00:36,100 --> 00:00:38,100
Houston is now controlling.
7
00:00:46,300 --> 00:00:50,400
Not so long ago,
we left our Earth for the first time...
8
00:00:51,100 --> 00:00:54,500
...to explore a neighboring world
in the solar system.
9
00:00:57,600 --> 00:01:01,000
Well, Houston, Sweet 16 has arrived.
10
00:01:01,400 --> 00:01:03,500
Roger, 16, copy you loud and clear.
11
00:01:03,600 --> 00:01:06,200
We found a fascinating place...
12
00:01:06,700 --> 00:01:09,100
...but barren and lifeless.
13
00:01:09,300 --> 00:01:12,500
We've stopped,
and let's take a gander around...
14
00:01:13,000 --> 00:01:14,900
...and see which way we ought to head.
15
00:01:15,100 --> 00:01:18,000
Dave, if we could make it out that far,
directly ahead of us.
16
00:01:18,200 --> 00:01:20,300
Look at those large blocks.
17
00:01:21,300 --> 00:01:24,100
You mean as we come down the slope,
yeah, at 12:00.
18
00:01:24,300 --> 00:01:27,100
One sight stood out from all the others.
19
00:01:28,400 --> 00:01:31,600
When we looked back
across the moon's horizon...
20
00:01:31,900 --> 00:01:34,800
...we saw the Earth, our home...
21
00:01:35,700 --> 00:01:37,600
...a tiny oasis...
22
00:01:37,800 --> 00:01:41,100
...beckoning across
all those miles of empty space.
23
00:01:41,800 --> 00:01:46,500
I'll tell you, it looks beautiful going away
and it'll look even better coming back.
24
00:02:23,000 --> 00:02:25,400
To look at our Earth from the outside...
25
00:02:25,500 --> 00:02:28,400
...is to discover an entirely new planet.
26
00:02:30,700 --> 00:02:33,000
We can see familiar landforms...
27
00:02:33,200 --> 00:02:35,600
...like Florida and the Bahamas.
28
00:02:37,100 --> 00:02:39,300
But, what's most striking from space...
29
00:02:39,500 --> 00:02:41,100
...is that our world...
30
00:02:41,100 --> 00:02:43,500
...unlike any other we know of...
31
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...is a world of water.
32
00:02:46,800 --> 00:02:49,400
Two-thirds of it is covered by ocean...
33
00:02:49,600 --> 00:02:52,700
...glistening in layers
of blue and turquoise...
34
00:02:52,900 --> 00:02:55,400
...through a delicate filigree of cloud.
35
00:02:59,600 --> 00:03:02,700
All of it is wrapped in a thin layer of air...
36
00:03:03,900 --> 00:03:06,400
...shielding its surface
from the harsh radiation...
37
00:03:06,600 --> 00:03:08,600
...and cold vacuum of space.
38
00:03:11,700 --> 00:03:14,400
If it weren't for this fragile cocoon...
39
00:03:14,600 --> 00:03:17,900
...our beautiful planet
would be as dry and lifeless...
40
00:03:18,100 --> 00:03:21,200
...as our nearest neighbors
in the solar system.
41
00:03:27,500 --> 00:03:30,300
Mars has only a feeble atmosphere.
42
00:03:30,900 --> 00:03:33,400
It's locked in a permanent ice age.
43
00:03:36,800 --> 00:03:39,600
Venus, under a very dense atmosphere...
44
00:03:39,900 --> 00:03:41,700
...is hotter than an oven.
45
00:03:42,700 --> 00:03:44,700
Nothing could live here.
46
00:03:45,900 --> 00:03:47,600
As far as we know...
47
00:03:47,800 --> 00:03:50,300
...only the Earth can support life.
48
00:03:54,100 --> 00:03:56,300
To learn more
about the unique environment...
49
00:03:56,500 --> 00:03:59,000
...which makes life possible here on earth...
50
00:03:59,800 --> 00:04:03,300
...we're now returning to space,
in a variety of craft.
51
00:04:04,000 --> 00:04:06,800
We call this: "Mission to Planet Earth".
52
00:04:35,700 --> 00:04:37,600
Shannon, come on up!
53
00:04:38,500 --> 00:04:39,600
This is great.
54
00:04:39,700 --> 00:04:43,500
Only a few hundred people
have actually seen the Earth from space.
55
00:04:43,800 --> 00:04:44,900
Look at that.
56
00:04:45,100 --> 00:04:47,400
Here, we can see it as a whole.
57
00:04:56,600 --> 00:04:58,400
Floating beneath us...
58
00:04:58,600 --> 00:05:00,800
...Sri Lanka and India.
59
00:05:02,700 --> 00:05:05,100
But, now, we also see a planet...
60
00:05:05,300 --> 00:05:07,800
...bathed in the light of a nearby star:
61
00:05:08,000 --> 00:05:09,300
The Sun.
62
00:05:11,500 --> 00:05:14,000
Ours is a world of constant change...
63
00:05:15,200 --> 00:05:18,800
...shaped and reshaped
by nature's powerful forces.
64
00:05:22,100 --> 00:05:25,400
Its blueness came out of the earth itself.
65
00:05:27,300 --> 00:05:30,900
The ancient oceans were steamed
out of the interior...
66
00:05:31,000 --> 00:05:33,000
...by erupting volcanoes.
67
00:05:34,700 --> 00:05:38,400
We know this one
as the Big Island of Hawaii.
68
00:05:44,000 --> 00:05:47,000
Now, whole continents appear.
69
00:05:48,300 --> 00:05:50,100
Europe is on the left.
70
00:05:51,500 --> 00:05:54,500
Stretching beyond Gibraltar
to the horizon...
71
00:05:54,700 --> 00:05:56,700
...the Mediterranean Sea.
72
00:05:59,300 --> 00:06:01,500
On the right: Africa.
73
00:06:12,000 --> 00:06:14,100
Deep in the heart of Africa...
74
00:06:14,300 --> 00:06:17,600
...we come upon a land of forests,
lakes and rivers.
75
00:06:20,600 --> 00:06:22,700
We're crossing over Lake Victoria...
76
00:06:22,900 --> 00:06:25,600
...and the broad plain of the Serengeti.
77
00:06:31,700 --> 00:06:33,400
Here, beneath us...
78
00:06:33,600 --> 00:06:37,100
...our planet's systems of water,
earth and air...
79
00:06:37,500 --> 00:06:39,700
...interact to sustain life.
80
00:06:45,500 --> 00:06:48,300
To observe this complex environment
more closely...
81
00:06:49,500 --> 00:06:53,400
...we'll drop down to the surface
of the strange red lake below.
82
00:07:01,700 --> 00:07:03,600
This is Lake Natron.
83
00:07:05,300 --> 00:07:08,300
It's hard to believe
any life could exist here.
84
00:07:09,400 --> 00:07:13,100
But, in fact, the lurid color is the life itself.
85
00:07:14,500 --> 00:07:18,400
The water is teeming with red algae
that feed on white soda...
86
00:07:18,800 --> 00:07:20,800
...from nearby volcanoes.
87
00:07:24,800 --> 00:07:28,600
Ash, spewing from these volcanoes
for millions of years...
88
00:07:29,400 --> 00:07:32,800
...nourished the great grasslands
of the Serengeti...
89
00:07:33,100 --> 00:07:36,000
...where a wondrous array
of species evolved.
90
00:07:44,400 --> 00:07:47,200
Each depends in some way
upon the others.
91
00:07:53,500 --> 00:07:56,600
Every link between animals and plants...
92
00:07:57,000 --> 00:07:58,300
...is a strand...
93
00:07:58,500 --> 00:08:01,200
...in the rich fabric of life on Earth.
94
00:08:18,000 --> 00:08:20,700
Of all the creatures that evolved in Africa...
95
00:08:21,800 --> 00:08:23,800
...only one stood upright.
96
00:08:25,300 --> 00:08:28,000
Only one developed tools and language.
97
00:08:30,300 --> 00:08:32,100
For about a million years...
98
00:08:32,300 --> 00:08:34,600
...humans were hunters and gatherers.
99
00:08:36,500 --> 00:08:38,200
Then we discovered farming.
100
00:08:42,900 --> 00:08:46,000
Now, the same land could support
many more people.
101
00:08:47,800 --> 00:08:51,800
But without the Earth's life-support system
of water and air...
102
00:08:52,900 --> 00:08:55,200
...not a living thing could exist.
103
00:09:00,700 --> 00:09:03,100
Two hundred miles above the Earth...
104
00:09:03,200 --> 00:09:05,000
...there is no air.
105
00:09:07,700 --> 00:09:10,200
This astronaut must wear a spacesuit.
106
00:09:10,900 --> 00:09:13,400
It supplies the oxygen he needs...
107
00:09:13,600 --> 00:09:16,800
...and insulates his body
from extreme heat and cold.
108
00:09:22,200 --> 00:09:26,300
Inside, the orbiter functions
somewhat like a miniature Earth.
109
00:09:27,900 --> 00:09:32,400
The environment is carefully balanced
to keep the astronauts comfortable.
110
00:09:33,800 --> 00:09:36,300
One system controls the temperature.
111
00:09:37,300 --> 00:09:39,300
Another supplies oxygen.
112
00:09:43,100 --> 00:09:44,100
On Earth...
113
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...the forests and oceans
absorb the carbon dioxide we exhale.
114
00:09:49,900 --> 00:09:53,900
In space, the crew uses special canisters
to clean the air.
115
00:09:55,200 --> 00:09:59,300
For a short time, this artificial system
supplies to the astronauts...
116
00:09:59,900 --> 00:10:02,900
...what the Earth
has always provided for us.
117
00:10:04,600 --> 00:10:08,000
Its natural systems slowly recycle the air...
118
00:10:08,300 --> 00:10:10,600
...the water and even the rock.
119
00:10:13,300 --> 00:10:14,700
In one cycle...
120
00:10:14,800 --> 00:10:19,600
...heat from the sun evaporates water
from the ocean to form clouds.
121
00:10:21,000 --> 00:10:23,400
Winds drive the clouds over land.
122
00:10:25,700 --> 00:10:28,400
Rain from the clouds
falls back to the Earth...
123
00:10:28,700 --> 00:10:30,900
...and then runs down to the sea...
124
00:10:31,100 --> 00:10:33,400
...where the cycle begins once more.
125
00:10:38,800 --> 00:10:41,900
Heat stored in the clouds
can drive them upwards...
126
00:10:42,000 --> 00:10:44,700
...into towering thunderheads.
127
00:10:44,900 --> 00:10:48,200
Inside them,
powerful electric charges are building.
128
00:11:33,300 --> 00:11:36,200
You can see lightning on Earth from space.
129
00:11:36,800 --> 00:11:38,800
Astronaut Charlie Bolden:
130
00:11:39,900 --> 00:11:43,000
Probably, my favorite spectacular view
is nighttime...
131
00:11:43,200 --> 00:11:45,300
...watching lightning all over the Earth...
132
00:11:45,400 --> 00:11:47,900
...as it goes from cloud top to cloud top...
133
00:11:48,100 --> 00:11:49,700
...over hundreds of miles...
134
00:11:49,900 --> 00:11:52,800
...almost like somebody
is conducting an orchestra, you know...
135
00:11:53,000 --> 00:11:56,100
...and the lights flash
in response to the music and everything.
136
00:11:56,200 --> 00:11:59,300
You float up in the window
and look for long periods of time...
137
00:11:59,600 --> 00:12:02,600
...in amazement,
at what's going on down there.
138
00:12:08,400 --> 00:12:11,100
In places where there is a lot of rainfall...
139
00:12:11,300 --> 00:12:13,800
...an abundance of life springs forth.
140
00:12:15,900 --> 00:12:17,700
The plants produce oxygen...
141
00:12:17,900 --> 00:12:20,600
...which we and the other animals breathe.
142
00:12:24,400 --> 00:12:27,200
Life on Earth is easy to see from space.
143
00:12:28,300 --> 00:12:31,100
Costa Rica and Panama are green with it.
144
00:12:40,000 --> 00:12:43,200
But other places in the world
get almost no rain.
145
00:12:45,000 --> 00:12:48,600
In the Namib Desert,
only wind has shaped the surface...
146
00:12:49,700 --> 00:12:53,900
...sweeping the parched sand
into dunes, nearly 1,000 feet high.
147
00:12:59,600 --> 00:13:01,900
In some of the driest deserts...
148
00:13:02,100 --> 00:13:06,300
...people have drilled for water
trapped in the rocks, deep below the sand.
149
00:13:09,300 --> 00:13:12,800
Each one of these tiny circles
is an irrigated field...
150
00:13:13,400 --> 00:13:15,500
...half a mile in diameter.
151
00:13:18,000 --> 00:13:20,100
But this is a short-term gain.
152
00:13:20,400 --> 00:13:23,800
It will take only 50 years
to use up all the water...
153
00:13:24,200 --> 00:13:27,100
...but more than 10,000 years to replace it.
154
00:13:32,900 --> 00:13:35,400
In some regions, like the Sahara...
155
00:13:36,100 --> 00:13:40,800
...the amount of rainfall can change
drastically within a single generation.
156
00:13:42,000 --> 00:13:45,100
When we started looking at Lake Chad
from space...
157
00:13:45,500 --> 00:13:48,100
...we saw that it was shrinking.
158
00:13:48,600 --> 00:13:50,300
Soon a wave of droughts...
159
00:13:50,500 --> 00:13:53,400
...brought starvation
to the people living here.
160
00:13:56,100 --> 00:13:58,900
We don't know why
these local changes occur...
161
00:13:59,600 --> 00:14:02,300
...but we do know
that the Earth's climate, as a whole...
162
00:14:02,500 --> 00:14:04,600
...has changed over much longer periods.
163
00:14:08,800 --> 00:14:11,100
During the last million years...
164
00:14:11,300 --> 00:14:15,200
...great sheets office
advanced and retreated several times...
165
00:14:15,600 --> 00:14:18,900
...burying Northern Europe
and much of North America.
166
00:14:23,600 --> 00:14:26,100
This is the Hubbard Glacier in Alaska.
167
00:14:43,200 --> 00:14:46,100
Trapped deep inside these frozen walls...
168
00:14:46,400 --> 00:14:48,500
...is a record of climate change...
169
00:14:48,600 --> 00:14:51,000
...going back thousands of years.
170
00:14:59,200 --> 00:15:02,000
By analyzing samples of the ancient ice...
171
00:15:02,300 --> 00:15:05,400
...we may learn to predict
our future climate.
172
00:15:11,000 --> 00:15:13,000
Ten thousand years from now...
173
00:15:13,200 --> 00:15:16,700
...perhaps the sites of Montreal,
Detroit and Copenhagen...
174
00:15:17,000 --> 00:15:19,900
...will again lie buried
beneath a mile office.
175
00:15:25,200 --> 00:15:27,400
And it's moving. Looks good.
176
00:15:27,800 --> 00:15:30,600
To observe large-scale changes
on the Earth...
177
00:15:30,800 --> 00:15:32,600
...we use satellites.
178
00:15:34,000 --> 00:15:36,700
The TDR satellite will act as a relay...
179
00:15:37,000 --> 00:15:39,600
...linking scientists
with dozens of spacecraft...
180
00:15:39,800 --> 00:15:42,000
...watching different parts of the globe.
181
00:15:42,200 --> 00:15:44,600
Kathy, it looked like we had
a good deploy on time.
182
00:15:44,800 --> 00:15:46,300
Everything looks good.
183
00:15:46,500 --> 00:15:49,300
Some study ocean currents...
184
00:15:49,500 --> 00:15:51,700
...others monitor the health of crops.
185
00:15:52,700 --> 00:15:55,200
They also warn us when storms develop.
186
00:16:01,600 --> 00:16:03,000
Of all the storms...
187
00:16:03,000 --> 00:16:06,500
...the most dangerous
and unpredictable are hurricanes.
188
00:16:08,200 --> 00:16:10,100
Without help from satellites...
189
00:16:10,300 --> 00:16:13,600
...we could not prepare ourselves
for the onslaught.
190
00:16:26,200 --> 00:16:28,700
We are under a hurricane warning.
191
00:16:28,900 --> 00:16:33,200
Officials of Civil Defense
are advising voluntary evacuation...
192
00:16:33,700 --> 00:16:35,700
...of the Berry Islands.
193
00:17:20,900 --> 00:17:24,800
Hurricane Hugo,
after ravaging Puerto Rico...
194
00:17:24,900 --> 00:17:26,900
...tore into South Carolina.
195
00:17:28,300 --> 00:17:30,900
What was once a national forest...
196
00:17:31,200 --> 00:17:33,200
...is now a heap of kindling.
197
00:17:36,700 --> 00:17:38,700
Where once there was a house...
198
00:17:38,900 --> 00:17:40,900
...only the front steps remain.
199
00:17:53,300 --> 00:17:54,500
Overnight...
200
00:17:54,700 --> 00:17:58,300
...nature's fury
has devastated entire communities.
201
00:18:04,500 --> 00:18:06,900
But, then, as quickly as it struck...
202
00:18:07,000 --> 00:18:08,400
...the storm vanishes...
203
00:18:08,600 --> 00:18:11,300
...and the eastern seaboard
is calm once more.
204
00:18:12,500 --> 00:18:16,400
There are, however, other catastrophic
events affecting our planet.
205
00:18:18,400 --> 00:18:21,100
They are far more violent than any storm.
206
00:18:27,300 --> 00:18:31,700
The Earth is continually pelted
by a hail of objects from space.
207
00:18:32,500 --> 00:18:35,300
Most are tiny
and burn up in the atmosphere.
208
00:18:36,700 --> 00:18:39,600
But, every now and then,
a big one gets through.
209
00:18:41,400 --> 00:18:45,000
Some 30,000 years ago,
a piece of an asteroid...
210
00:18:45,300 --> 00:18:48,100
...weighing perhaps 300,000 tons...
211
00:18:48,300 --> 00:18:50,000
...slammed into Arizona.
212
00:18:51,200 --> 00:18:54,800
It blasted out a crater
almost 600 feet deep.
213
00:18:56,200 --> 00:18:58,900
As collisions go, it was a small one.
214
00:19:13,200 --> 00:19:17,500
From space, we can see the scars
from much bigger impacts on Earth.
215
00:19:18,200 --> 00:19:20,900
This one in Canada is 60 miles across.
216
00:19:24,000 --> 00:19:28,000
The effects of a similar collision
may have wiped out the dinosaurs.
217
00:19:32,200 --> 00:19:35,900
The young Earth was once
completely covered by impact craters.
218
00:19:36,700 --> 00:19:38,400
But most have been erased...
219
00:19:38,600 --> 00:19:42,600
...by the powerful forces
which keep changing the face of our planet.
220
00:19:45,600 --> 00:19:48,700
From orbit, we see evidence
for the most astonishing...
221
00:19:49,000 --> 00:19:51,800
...geological discovery of our time:
222
00:19:51,900 --> 00:19:56,300
The Earth's crust is broken
into about a dozen moving plates.
223
00:19:58,700 --> 00:20:01,600
Here, a giant crack extends out
to the right...
224
00:20:01,800 --> 00:20:04,700
...from the Sinai Peninsula
through the Dead Sea.
225
00:20:08,300 --> 00:20:09,800
In a closer view...
226
00:20:09,900 --> 00:20:13,000
...you can see how the Sinai,
shaped like a triangle...
227
00:20:13,500 --> 00:20:16,800
...has wrenched away from Saudi Arabia,
on the far right.
228
00:20:20,300 --> 00:20:24,000
The rift that opened between them
lies under the Gulf of Aqaba.
229
00:20:30,700 --> 00:20:33,200
Most of the rifts are on the sea floor.
230
00:20:42,300 --> 00:20:45,800
To search for them,
we need vehicles similar to spaceships.
231
00:20:53,000 --> 00:20:55,800
We are on a journey, two miles down...
232
00:20:56,000 --> 00:20:58,300
...to the very bottom of the ocean.
233
00:21:01,000 --> 00:21:04,700
We will enter a world
that has never seen sunlight.
234
00:21:07,200 --> 00:21:11,200
And yet, the ocean floor
is alive with exotic creatures.
235
00:21:21,200 --> 00:21:23,500
They thrive on nutrients in the water...
236
00:21:23,700 --> 00:21:27,100
...which is heated
by the Earth's great furnace beneath.
237
00:21:32,900 --> 00:21:36,300
Here, in mid ocean,
at the boundary between two plates...
238
00:21:36,800 --> 00:21:39,600
...molten rock pushes up from the interior.
239
00:21:41,500 --> 00:21:44,800
These lava chimneys
are actually miniature volcanoes.
240
00:21:48,800 --> 00:21:52,000
Just as one of the Earth's systems
recycles water...
241
00:21:52,800 --> 00:21:54,800
...another recycles rock.
242
00:21:56,400 --> 00:21:59,300
As new crust
is added to the Earth's surface here...
243
00:21:59,500 --> 00:22:01,500
...the other edge of the plate...
244
00:22:01,500 --> 00:22:03,700
...perhaps thousands of miles away...
245
00:22:03,900 --> 00:22:06,400
...sinks back into the Earth's interior.
246
00:22:07,400 --> 00:22:08,500
As it melts...
247
00:22:09,500 --> 00:22:11,400
...volcanoes erupt.
248
00:22:19,100 --> 00:22:22,300
This is Sakura-jima Volcano, in Japan.
249
00:22:23,600 --> 00:22:26,700
You can see its smoke
all the way from space.
250
00:22:53,500 --> 00:22:57,200
Here, two great plates
are slowly crushing together...
251
00:22:57,700 --> 00:23:00,000
...pushing up the Himalayas...
252
00:23:00,200 --> 00:23:02,700
...the highest mountain range on Earth.
253
00:23:05,500 --> 00:23:08,300
From just beneath us,
the snow-capped peaks...
254
00:23:08,600 --> 00:23:12,600
...stretch over a thousand miles
towards the horizon on the left.
255
00:23:27,800 --> 00:23:30,800
Almost all of North America,
here on the right...
256
00:23:31,200 --> 00:23:33,300
...lies upon a single plate.
257
00:23:34,500 --> 00:23:38,200
On the left, the Pacific plate
is sliding northward past it...
258
00:23:39,200 --> 00:23:42,200
...at the stately pace of a halfinch per year.
259
00:23:43,800 --> 00:23:46,400
The Gulf of California, in the center...
260
00:23:46,600 --> 00:23:49,200
...marks the boundary
between the two plates.
261
00:23:50,000 --> 00:23:51,600
Along this boundary...
262
00:23:52,000 --> 00:23:55,000
...the infamous San Andreas Fault
runs northward.
263
00:23:56,600 --> 00:23:58,500
Using satellite pictures...
264
00:23:58,700 --> 00:24:02,900
...a computer can take us on
an imaginary flight along the San Andreas.
265
00:24:04,700 --> 00:24:07,800
The actual height of the terrain
has been exaggerated...
266
00:24:08,100 --> 00:24:12,200
...to accent the network of valleys
formed by the fault's many traces.
267
00:24:44,500 --> 00:24:47,100
As the two plates slide past one another...
268
00:24:47,400 --> 00:24:49,700
...they lock together in some places.
269
00:24:50,800 --> 00:24:52,600
The strain builds.
270
00:25:07,300 --> 00:25:10,800
Near San Francisco,
the strain reaches the breaking point.
271
00:25:12,300 --> 00:25:14,100
Something has to give...
272
00:25:14,700 --> 00:25:18,200
...and when it does,
we are rocked by an earthquake.
273
00:25:21,600 --> 00:25:23,500
Magnified by the computer...
274
00:25:23,700 --> 00:25:27,300
...first a sharp wave,
traveling at 10,000 miles an hour...
275
00:25:27,600 --> 00:25:29,500
...moves out from the epicenter.
276
00:25:30,500 --> 00:25:33,200
Then comes a series of rolling waves.
277
00:25:33,600 --> 00:25:36,000
These inflict most of the damage.
278
00:25:45,000 --> 00:25:48,700
It is impossible to know yet
how many more fatalities there are...
279
00:25:49,600 --> 00:25:53,600
...following this earthquake, which hit at
5:04 yesterday, in the middle of rush hour.
280
00:25:53,900 --> 00:25:57,900
The earliest efforts to rescue
came last night from all sorts of people:
281
00:25:58,500 --> 00:26:01,300
Cops, firemen, people right here
in the neighborhood who...
282
00:26:01,600 --> 00:26:04,500
...risked their lives to rescue strangers.
283
00:26:11,600 --> 00:26:13,500
Everything started shaking.
284
00:26:13,700 --> 00:26:16,300
I started running.
I didn't know where to run 'cause...
285
00:26:16,500 --> 00:26:18,500
...l was getting too scared...
286
00:26:18,700 --> 00:26:22,200
...and my mom couldn't get me
because the floor was moving too hard.
287
00:26:24,100 --> 00:26:27,700
Some buildings, though still standing,
had to be demolished.
288
00:26:45,000 --> 00:26:48,600
In time, the houses and highways
are rebuilt...
289
00:26:49,200 --> 00:26:52,400
...better designed to withstand
the next earthquake.
290
00:26:54,000 --> 00:26:57,400
People will always be subject
to nature's powerful whims.
291
00:27:03,400 --> 00:27:05,900
In Japan, another fault zone...
292
00:27:06,300 --> 00:27:08,900
...millions live with the same uncertainty.
293
00:27:17,900 --> 00:27:20,800
One day, almost certainly...
294
00:27:21,000 --> 00:27:23,200
...we'll learn to predict earthquakes.
295
00:27:26,300 --> 00:27:29,200
But, in the meantime,
we try to live in harmony...
296
00:27:29,400 --> 00:27:31,700
...with our sometimes turbulent planet.
297
00:27:33,300 --> 00:27:37,500
After each assault, we pick up the pieces,
and carry on.
298
00:27:43,900 --> 00:27:47,600
And sometimes, we wonder
if there could be any other place...
299
00:27:48,000 --> 00:27:50,400
...as wonderful in all the universe.
300
00:28:14,500 --> 00:28:16,400
But, now, a new force...
301
00:28:16,900 --> 00:28:19,500
...as threatening as any in nature...
302
00:28:19,800 --> 00:28:22,300
...has begun to change the Earth.
303
00:28:23,200 --> 00:28:25,300
We are that force.
304
00:28:27,900 --> 00:28:30,800
To our ancestors,
only a few centuries ago...
305
00:28:31,600 --> 00:28:34,300
...the forests, oceans and skies...
306
00:28:34,500 --> 00:28:37,100
...seemed vast and almost limitless.
307
00:28:38,000 --> 00:28:40,000
But all that has changed.
308
00:28:41,500 --> 00:28:44,100
It is only now that we can see it
from space...
309
00:28:44,400 --> 00:28:48,500
...that we realize the magnitude
of what we are doing to the Earth.
310
00:28:54,000 --> 00:28:58,400
As settlers cleared land to create
the great farms of the American Midwest...
311
00:28:59,600 --> 00:29:01,700
...more and more valuable topsoil...
312
00:29:01,900 --> 00:29:04,200
...eroded into the Mississippi.
313
00:29:05,900 --> 00:29:08,600
Flowing southward down this great river...
314
00:29:09,100 --> 00:29:11,500
...the silt is carrying pesticides.
315
00:29:12,200 --> 00:29:15,000
They are pouring into the Gulf of Mexico.
316
00:29:17,900 --> 00:29:19,800
The Yangtze River in China...
317
00:29:20,000 --> 00:29:23,700
...is a natural conveyor belt for soil
from the plateau above it.
318
00:29:24,900 --> 00:29:28,900
Now it doubles as a dump
for sewage and industrial wastes.
319
00:29:31,600 --> 00:29:36,100
But an island, far away, has become
the most eroded place on Earth.
320
00:29:38,600 --> 00:29:42,300
Madagascar was once cloaked
in lush forest.
321
00:29:43,500 --> 00:29:46,600
Now loggers and farmers
have cut most of it down.
322
00:29:48,200 --> 00:29:50,000
With nothing to cling to...
323
00:29:50,100 --> 00:29:54,900
...the thin red soil has washed down the
mountain slopes into the Betsiboka River...
324
00:29:55,300 --> 00:29:57,700
...choking its mouth completely.
325
00:30:02,400 --> 00:30:04,600
Off the coast of South America...
326
00:30:04,800 --> 00:30:07,700
...the Atlantic is awash
with brown sediment...
327
00:30:07,900 --> 00:30:10,700
...pouring out from the Orinoco
and the Amazon.
328
00:30:13,200 --> 00:30:14,200
Upriver...
329
00:30:14,300 --> 00:30:17,700
...lies the largest continuous rainforest
in the world.
330
00:30:28,300 --> 00:30:32,700
This is home to nearly half
of all the species found on Earth.
331
00:30:34,300 --> 00:30:36,600
They are sheltered from sun and wind...
332
00:30:36,800 --> 00:30:39,000
...by its great moist canopy.
333
00:30:40,800 --> 00:30:43,700
People depend upon the rainforest
for food...
334
00:30:44,000 --> 00:30:46,800
...and the rare medicines
its plants produce.
335
00:31:01,400 --> 00:31:04,500
Like those who settled in Europe
and North America...
336
00:31:05,000 --> 00:31:09,200
...people in search of a better life
are clearing the land for farming.
337
00:31:10,600 --> 00:31:13,800
The cut trees are left to dry, then burned.
338
00:31:43,000 --> 00:31:46,100
Almost one acre of tropical rainforest...
339
00:31:46,400 --> 00:31:48,500
...is destroyed every second.
340
00:31:56,000 --> 00:31:58,100
Some 100 species...
341
00:31:58,300 --> 00:32:00,700
...most of which we've never even seen...
342
00:32:01,000 --> 00:32:03,800
...are driven to extinction every day...
343
00:32:03,900 --> 00:32:06,100
...lost to the planet forever.
344
00:32:10,800 --> 00:32:12,500
In destroying them...
345
00:32:12,700 --> 00:32:15,600
...we are tampering with the fabric of life...
346
00:32:16,100 --> 00:32:19,400
...cutting the very strands
that bind us all together.
347
00:32:27,100 --> 00:32:30,800
Only from space can you see
how much is burning.
348
00:32:32,700 --> 00:32:36,600
The smoke spreads thousands of miles
across to the Andes Mountains.
349
00:32:39,500 --> 00:32:42,600
Soon we will see roads here, then farms.
350
00:32:43,200 --> 00:32:45,300
Towns will expand to cities.
351
00:32:54,500 --> 00:32:57,200
Eight million people live here,
in Los Angeles.
352
00:33:00,700 --> 00:33:03,900
Six million vehicles
and thousands of factories...
353
00:33:04,200 --> 00:33:06,200
...release chemicals into the atmosphere.
354
00:33:06,400 --> 00:33:09,400
This is the West Coast Air Quality
Management District...
355
00:33:09,600 --> 00:33:13,400
...with an air quality update
for the Los Angeles and Orange Counties.
356
00:33:13,700 --> 00:33:17,200
We're suggesting that persons
with heart or respiratory diseases...
357
00:33:17,300 --> 00:33:20,100
...should reduce physical activity.
358
00:33:20,300 --> 00:33:22,700
Smog permeates the air we breathe.
359
00:33:27,500 --> 00:33:30,400
Not only are we polluting our air...
360
00:33:30,700 --> 00:33:33,400
...we may also be altering our climate.
361
00:33:39,400 --> 00:33:40,800
Around the globe...
362
00:33:40,900 --> 00:33:45,500
...cars and factories belch huge amounts
of carbon dioxide into the air...
363
00:33:46,400 --> 00:33:50,000
...faster than our oceans
and depleted forests can absorb it.
364
00:34:04,300 --> 00:34:08,400
Our numbers are increasing
by nearly one-hundred million every year.
365
00:34:10,400 --> 00:34:12,400
We consume enough energy...
366
00:34:12,500 --> 00:34:14,800
...to be visible all the way from space.
367
00:34:17,200 --> 00:34:20,900
There are now more than five billion of us
spread across the Earth.
368
00:34:21,900 --> 00:34:24,900
In this satellite view,
you can see the continents...
369
00:34:25,200 --> 00:34:28,500
...outlined by the lights
of the great coastal cities.
370
00:34:30,200 --> 00:34:31,800
In North America.
371
00:34:36,400 --> 00:34:38,300
In Europe and in Asia.
372
00:34:41,100 --> 00:34:43,300
But our planet does have limits.
373
00:34:44,000 --> 00:34:47,400
The carbon dioxide
and other greenhouse gases we produce...
374
00:34:47,900 --> 00:34:50,100
...act like a blanket...
375
00:34:50,300 --> 00:34:53,100
...trapping the sun's heat
inside our atmosphere.
376
00:34:55,200 --> 00:34:58,300
Beneath it,
the Earth's temperature may be rising.
377
00:35:00,100 --> 00:35:01,800
Without intending it...
378
00:35:01,900 --> 00:35:05,300
...we are now conducting
an uncontrolled experiment...
379
00:35:05,500 --> 00:35:08,000
...on the Earth's life-support system...
380
00:35:08,200 --> 00:35:10,900
...and we cannot predict the consequences.
381
00:35:14,200 --> 00:35:16,300
But already there are clues.
382
00:35:18,700 --> 00:35:21,800
High in the stratosphere,
a thin layer of ozone...
383
00:35:22,100 --> 00:35:25,400
...shields us
from the sun's deadly ultra-violet rays.
384
00:35:27,300 --> 00:35:29,400
You can't see the ozone...
385
00:35:29,600 --> 00:35:31,900
...but our satellites
and other instruments...
386
00:35:32,000 --> 00:35:35,200
...have detected a hole
bigger than Europe...
387
00:35:35,400 --> 00:35:37,700
...in the ozone over Antarctica.
388
00:35:40,900 --> 00:35:42,700
We have created the hole...
389
00:35:42,900 --> 00:35:45,900
...with chemicals we use
in our everyday lives.
390
00:35:49,700 --> 00:35:52,900
Faced with this evidence,
the nations of the world...
391
00:35:53,300 --> 00:35:56,700
...recently agreed to restrict
and eventually ban...
392
00:35:57,000 --> 00:35:59,000
...production of those chemicals.
393
00:36:01,300 --> 00:36:03,400
Looking out past the shuttle's tail...
394
00:36:03,400 --> 00:36:05,200
...Astronaut Jim Buchli:
395
00:36:06,600 --> 00:36:08,900
Look at how thin the atmosphere is.
396
00:36:09,100 --> 00:36:11,500
Everything beyond that thin blue line...
397
00:36:12,000 --> 00:36:13,900
...is the void of space.
398
00:36:14,300 --> 00:36:17,900
And everything below it
is what it takes to sustain life.
399
00:36:19,500 --> 00:36:21,500
And everything that we do...
400
00:36:22,100 --> 00:36:24,000
...to this environment...
401
00:36:24,500 --> 00:36:26,900
...and our quality of life...
402
00:36:27,100 --> 00:36:29,200
...is below that little thin blue line.
403
00:36:29,400 --> 00:36:32,600
That's the only difference between...
404
00:36:32,800 --> 00:36:35,600
...what we enjoy here on Earth...
405
00:36:36,000 --> 00:36:39,100
...and the really harsh, uninhabitable...
406
00:36:39,900 --> 00:36:41,900
...blackness of space.
407
00:36:43,900 --> 00:36:45,900
That's not very wide, is it?
408
00:36:55,400 --> 00:36:57,700
Our world is a special place...
409
00:36:58,100 --> 00:37:00,900
...where millions of species coexist...
410
00:37:02,000 --> 00:37:05,600
...each one an integral part
of our planet's fabric.
411
00:37:10,300 --> 00:37:13,300
What we do will determine their fate...
412
00:37:14,700 --> 00:37:16,000
...and ours.
413
00:37:17,900 --> 00:37:20,700
We can undo the damage we have caused.
414
00:37:55,300 --> 00:37:58,900
The Earth we inherited
can again be a garden...
415
00:38:00,500 --> 00:38:02,600
...beautiful and bountiful.
416
00:38:04,300 --> 00:38:07,000
Everything we need for life is here.
417
00:38:10,000 --> 00:38:11,900
Shimmering blue...
418
00:38:12,000 --> 00:38:15,400
...it is our haven
in a vast black sea of space.
419
00:38:22,700 --> 00:38:24,300
This is our home.
420
00:38:26,000 --> 00:38:28,100
It will be home to our children...
421
00:38:29,200 --> 00:38:31,400
...and to their great-grandchildren.
422
00:38:34,500 --> 00:38:37,300
It is home to all the nations of the world.
423
00:38:42,400 --> 00:38:44,700
It's home to the people of Mexico.
424
00:38:53,900 --> 00:38:56,500
Home to the people of Greece and Turkey.
425
00:39:09,800 --> 00:39:12,800
It's home to Israelis and Arabs.
426
00:39:21,300 --> 00:39:23,500
It's home to the Vietnamese.
427
00:39:35,800 --> 00:39:38,200
It's home to the aboriginal people...
428
00:39:38,600 --> 00:39:41,300
...and the farmers
of the Australian outback.
429
00:39:49,900 --> 00:39:52,200
It's home to the people of Japan.
430
00:39:59,400 --> 00:40:02,100
It's home to the peoples of the Caribbean.
431
00:40:18,800 --> 00:40:20,800
It's home to all of us.
432
00:40:23,000 --> 00:40:25,100
It`s our only home...
433
00:40:26,200 --> 00:40:32,000
Format: MKV
Quality: BDRip
Video: 1280x720 ~ 6597 kbps 23.976 fps
Audio: English 640 kbps 5.1
Size: 2.19 GB
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