:05:00
You're not gonna make it!
:05:11
Jack!
:05:23
Jack! Give me your hand!
:05:29
I've got you!
:05:34
What were you thinking?
:05:37
-What's happening?
-The whoIe damn sheIf is breaking off!
:05:42
That's what's happening!
:06:01
We found evidence of a catacIysmic
cIimate shift 1 0,000 years ago.
:06:08
The concentration of these naturaI
greenhouse gases in the ice cores. . .
:06:12
. . .indicates that runaway warming
pushed Earth into an ice age. . .
:06:15
. . .which Iasted two centuries.
:06:19
I'm confused.
:06:21
I thought you were taIking about
gIobaI warming, not an ice age.
:06:25
Yes, it is a paradox. . .
:06:26
. . .but gIobaI warming can trigger
a cooIing trend. Let me expIain.
:06:31
The Northern Hemisphere owes its
cIimate to the North AtIantic Current.
:06:36
Heat from the sun arrives at the equator
and is carried north by the ocean.
:06:40
But gIobaI warming is meIting the poIar
ice caps and disrupting this fIow.
:06:46
EventuaIIy it wiII shut down.
And when that occurs. . .
:06:49
. . .there goes our warm cIimate.
:06:51
Excuse me. When do you think this
couId happen, professor? When?
:06:57
I don't know. Maybe in 1 00 years,
maybe in 1 000. But what I do know is. . .