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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
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Denison
Iowa
James Hansen
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More quotes by James Hansen

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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.
James Hansen
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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.
James Hansen
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Rising carbon price is essential to 'decarbonize' the economy - to remove the nation towards the era beyond fossil fuels.
James Hansen
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The five warmest years over the last century occurred in the last eight years.
James Hansen
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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.
James Hansen
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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.
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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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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We are on the precipice of climate system tipping points beyond which there is no redemption.
James Hansen
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The five-year mean global temperature has been flat for the last decade
James Hansen
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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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The evidence for human-made climate change is overwhelming.
James Hansen
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Adding CO2 to the air is like throwing another blanket on the bed.
James Hansen
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If we fail to act, we will end up with a different planet.
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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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.
James Hansen
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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.
James Hansen
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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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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
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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