You look at that river               
gently flowing by.               
You notice the leaves               
rustling发出沙沙的声音 with the wind.               
You hear the birds.               
You hear the tree frogs.               
ln the distance, you hear a cow.               
You feel the grass.               
The mud gives a little bit on the river bank.               
lt's quiet. lt's peaceful.               
And all of a sudden,               
it's a gear shift inside you.               
And it's like taking a deep breath and going,               
"Oh, yeah, l forgot about this."               
This is the first picture of the Earth from space that any of us ever saw.               
It was taken on Christmas Eve, 1968               
during the ApoIIo 8 Mission.               
...within relatively comfortable boundaries.               
But we are fiIIing up that thin shell of atmosphere with poIIution.               
Ladies and gentlemen, Mr. Al Gore.               
I am AI Gore.               
I used to be the next president of the United States Of America.               
I don't find that particularly funny.               
l've been trying to tell this story for a long time,               
and l feel as if l've failed to get the message across.               
l was in politics for a long time and l'm proud of my service.               
You gotta be kidding me. This is a national disaster.               
Get every doggone Greyhound bus line in the country,               
and ving to New Orleans.               
That's them thinking small, man,               
and this is a major, major, major deal.               
What do you need right now?               
There are good people,               
who are in politics in both parties               
who hold this at arm's length               
because if they acknowledge it and recognize it,               
then the moral imperative必要的事,必须完成的事 to make big changes is inescapable.               
...unless you fix the biggest damn crisis in the history of this country.               
...scouted out landing spots and they Lost radio contact               
when they went around the dark side of the moon.               
And there was inevitably some suspense悬念.               
Then when they came back in radio contact,               
they Looked up    and they snapped拍快照 this picture, and it became known as Earth Ri
se.
And that one picture exploded in the consciousness of humankind.    激发了人类的自省           
It leads to dramatic戏剧性的 changes.               
Within 18 months of this picture, the modern environmental movement had begun.           
The next picture was taken on the Last of the ApoIIo missions,               
ApoIIo 1 7.               
This one was taken on December 11 , 1972,               
and it is the most commonly published photograph in all of history.               
And it's the onIy picture of the Earth from space that we have               
where the sun was directIy behind the spacecraft               
so that the Earth is fuIIy Iit up and not partIy in darkness.               
The next image I'm gonna show you has aImost never been seen.               
It was taken by a spacecraft caIIed The Galileo that went out to expIore the soIar system.   
And as it was Ieaving Earth's gravity, it turned its cameras around               
and took a time Lapse picture of one day's worth of rotation旋转,    here compressed into 压缩成24 seconds.   
Isn't that beautifuI?    This image is a magical image in a way在某种程度上.               
It was made by a friend of mine, Tom Van Sant.               
He took 3,000 separate satellite pictures               
taken over a three-year period, digitally stitched together数字技术拼接而成.               
And he chose images that wouId give a cIoud-free view
of every square inch of the Earth's surface.               
AII of the Land masses accurateIy portrayed绘制.               
When that's aII spread out, it becomes an iconic标志性的 image.               
I show this because I wanna teII you a story about two teachers I had.               
One that I didn't Iike that much, the other who is a reaI hero to me.               
I had a grade schooI teacher who taught geography               
by puIIing a map of the worId down in front of the bIackboard.               
I had a cIassmate in the sixth grade who raised his hand               
and he pointed to the outline轮廓 of the east coast of South America               
and he pointed to the west coast of Africa               
and he asked, ''Did they ever fit together?''                               
And the teacher said,               
''Of course not. That's the most ridiculous thing I've ever heard.''               
That student went on to 进入become a drug addict成瘾者 and a ne'er-do-weII.               
The teacher went on to become science advisor in the current administration政府,内阁.               
But, you know, the teacher was actuaIIy reflecting
the conclusion of the scientific establishment of that time.               
Continents are so big, obviousIy they don't move.               
But, actually, as we now know, they did move.               
They moved apart from one another.               
But at one time they did, in fact, fit together.               
But that assumption was a probIem.               
It refIected the well-known wisdom                cari
that what gets us into troubIe is not what we don't know,               

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