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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.
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
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More quotes by James Hansen
The trains carrying coal to power plants are death trains. Coal-fired power plants are factories of death.
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The fact is fossil fuel carbon will stay in the surface climate system for millennia.
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Well, you know what happens to crime when the heat goes up.
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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.
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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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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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If we fail to act, we will end up with a different planet.
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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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It would be immoral to leave young people with a climate system spiraling out of control.
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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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What we are doing to the future of our children, and the other species on the planet, is a clear moral issue.
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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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Some Democrats deserve to be criticized.
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'Cap and trade' generates special interests, lobbyists, and trading schemes, yielding non-productive millionaires, all at public expense. The public is fed up with such business. Tax with 100% dividend, in contrast, would spur our economy, while aiding the disadvantaged, the climate, and our national security.
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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.
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The five warmest years over the last century occurred in the last eight years.
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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.
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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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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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The carbon emissions from tar shale and tar sands would initiate a continual unfolding of climate disasters over the course of this century. We would be miserable stewards of creation. We would rob our own children and grandchildren.
James Hansen
