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I hope that Live Earth ends global warming the same way the Live Aid ended world poverty.
--
In an interview at Live Earth in London

 

Chris Rock

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A consensus has emerged in our scientific community that global warming is no longer merely a theory but a reality, a crisis with truly global implications for planet Earth and all of us who share it. - Told to thousands at the New Jersey concert for Live Earth

 

Leonardo DiCaprio

 

At Live Earth on global warming "I think what you can do is vote...This problem will not be solved until we the electorates make it quite clear to candidates running for office that we will not vote for them unless they have a clear policy on the environment and global warming in particular. And also we will not vote for them if they have a track record like this current administration does."

 

Roger Waters

 

We may live without poetry, music and art;
We may live without conscience and live without heart;
We may live without friends; we may live without books;
But civilized man can not live without cooks.
He may live without books,—what is knowledge but grieving?
He may live without hope—what is hope but deceiving?
He may live without love,—what is passion but pining?
But where is the man that can live without dining?

 

Robert Bulwer-Lytton

 

One thing I try to point out to people, and Dick Lindzen has pointed this out in the past, too, is that, as most of you probably know, about ninety percent of the earth’s greenhouse effect is water vapor, then carbon dioxide, methane and some trace gases. The water vapor con-centration in the atmosphere goes up and down quite a bit, but it is self-regulating. Things don’t get too warm before precipitation systems suck the water vapor out again. I don’t understand how we can know how much warming there will be with global warming until we understand how precipitation systems change with warming. We don’t under-stand that, and I have papers from modelers who have said the same thing. Modelers don’t like to talk about what they don’t know. So until we understand these natural proc-esses that remove the earth’s primary greenhouse gas, water vapor, from the atmosphere – which is a self-regulating part of the earth keeping a constant temperature – I don’t think we can predict how much warming there will be due to increasing CO2. It is a mat-ter of faith again, I think. We are not saying that we don’t believe that there can be sig-nificant global warming. As John said, if you add CO2, something has to change. But things are changing all the time anyway. The big question is: So what? How much is it going to change, compared to other things? And what can you do about it?

 

Roy Spencer

 

We simply must do everything we can in our power to slow down global warming before it is too late... The science is clear. The global warming debate is over.

 

Arnold Schwarzenegger