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Only in the last few years did the science crystallize, revealing the urgency - our planet really is in peril. If we do not change course soon, we will hand our children a situation that is out of their control.

James Hansen

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James Hansen
Age: 83
Born: 1941
Born: March 29
Astrophysicist
Environmentalist
Physicist
Professor
University Teacher
Denison
Iowa
James Hansen
James E. Hansen
James E Hansen
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More quotes by James Hansen

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The last time the world was three degrees warmer than today-which is what we expect later this century-sea levels were 25m higher. So that is what we can look forward to if we don't act soon.
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The five-year mean global temperature has been flat for the last decade
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Money has too big an influence on our politics in Washington and somehow we need to do something about that.
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CEOs of fossil energy companies know what they are doing and are aware of long-term consequences of continued business as usual. In my opinion, these CEOs should be tried for high crimes against humanity and nature.
James Hansen
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Scientists will say we can't blame global warming for any single event. In a sense that's right, but the fact that the frequency and intensity of these events is increasing you can blame on global warming.
James Hansen
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In view of the immense power of natural weather and climate fluctuations and the great buffering capacity of the Earth, especially the ocean, it is easy to be skeptical about whether small anthropogenic changes of atmospheric composition can have important practical impacts.
James Hansen
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Well, you know what happens to crime when the heat goes up.
James Hansen
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Some Democrats deserve to be criticized.
James Hansen
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We are on the precipice of climate system tipping points beyond which there is no redemption.
James Hansen
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The trains carrying coal to power plants are death trains. Coal-fired power plants are factories of death.
James Hansen
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It would be immoral to leave young people with a climate system spiraling out of control.
James Hansen
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The urgency derives from the nearness of climate tipping points.
James Hansen
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I tend to be naive and gullible, I guess, but I try to believe that governments believe what they say.
James Hansen
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The forcings that drive long-term climate change are not known with an accuracy sufficient to define future climate change.
James Hansen
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I was lucky to grow up at a time when it was not difficult for the child of a tenant farmer to make his way to the state university.
James Hansen
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Because cap and trade is enforced through the selling and trading of permits, it actually perpetuates the pollution it is supposed to eliminate.
James Hansen
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Politicians think that if matters look difficult, compromise is a good approach. Unfortunately, nature and the laws of physics cannot compromise - they are what they are.
James Hansen
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...chief executives of large fossil fuel companies to [should] be put on trial for high crimes against humanity and nature [Hansen] accusing them of actively spreading doubt about global warming in the same way that tobacco companies blurred the links between smoking and cancer.
James Hansen
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The greatest danger hanging over our children and grandchildren is initiation of changes that will be irreversible on any time scale that humans can imagine.
James Hansen
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We have known since the 1800s that carbon dioxide traps heat in the atmosphere. The right amount keeps the climate conducive to human life.
James Hansen