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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.

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
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Hansen
Hansen J
Hansen J.
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Jim Hansen
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More quotes by James Hansen

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As a government employee, you can't testify against the government.
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A level of no more than 350 ppm is still feasible, with the help of reforestation and improved agricultural practices, but just barely - time is running out.
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How long have we got? We have to stabilize emissions of carbon dioxide within a decade, or temperatures will warm by more than one degree... We don't have much time left.
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Planet Earth, creation, the world in which civilization developed, the world with climate patterns that we know and stable shorelines, is in imminent peril.
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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.
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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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'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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Money has too big an influence on our politics in Washington and somehow we need to do something about that.
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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.
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The evidence for human-made climate change is overwhelming.
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I tend to be naive and gullible, I guess, but I try to believe that governments believe what they say.
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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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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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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 five-year mean global temperature has been flat for the last decade
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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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The fact is fossil fuel carbon will stay in the surface climate system for millennia.
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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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Adding CO2 to the air is like throwing another blanket on the bed.
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It would be immoral to leave young people with a climate system spiraling out of control.
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