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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
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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
J. E. Hansen
J E Hansen
J. Hansen
J Hansen
Hansen
Hansen J
Hansen J.
Hansen J. E.
Hansen JE
Jim Hansen
Humans
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Known
Traps
Human
Carbon
More quotes by James Hansen
Several times in Earth's history, rapid global warming occurred, apparently spurred by amplifying feedbacks. In each case, more than half of plant and animal species became extinct. New species came into being over tens and hundreds of thousands of years. But these are time scales and generations that we cannot imagine.
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I think we have a very brief window of opportunity to deal with climate change. No longer than a decade at most.
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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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Adding CO2 to the air is like throwing another blanket on the bed.
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Some Democrats deserve to be criticized.
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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
We have to, in the next ten years, begin to decrease the rate of carbon dioxide emissions and then flatten it out. If that doesn't happen in ten years, we're going to be passing certain tipping points. If the ice sheets begin to disintegrate, what can you do about it? You can't tie a rope around an ice sheet.
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The trains carrying coal to power plants are death trains. Coal-fired power plants are factories of death.
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The five-year mean global temperature has been flat for the last decade
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'Goals' and 'caps' on carbon emissions are practically worthless, if coal emissions continue, because of the exceedingly long lifetime of carbon dioxide in the air.
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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.
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As you get more global warming, you should see an increase in the extremes of the hydrological cycle - droughts and floods and heavy precipitation.
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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.
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If we drive our fellow species to extinction, we will leave a far more desolate planet for our descendants than the world we inherited from our elders.
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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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Recent warming coincides with rapid growth of human-made greenhouse gases. The observed rapid warming gives urgency to discussions about how to slow greenhouse gas emissions.
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The 5-year mean global temperature has been flat for the last decade, which we interpret as a combination of natural variability and a slow down in the growth rate of net climate forcing.
James Hansen
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.
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We are on the precipice of climate system tipping points beyond which there is no redemption.
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The five warmest years over the last century occurred in the last eight years.
James Hansen
