Coal is the single greatest threat to civilization and all life on our planet. — James Hansen Copy Share Image
...99 percent confident that the world really was getting warmer and that there was a high degree of probability that it was… — James Hansen Copy Share Image
Policy decisions on climate change are being deliberated every day by those without full knowledge of the science, and often with intentional… — James Hansen Copy Share Image
I think we have a very brief window of opportunity to deal with climate change... no longer than a decade, at the… — James Hansen Copy Share Image
Imagine a giant asteroid on a direct collision course with Earth. That is the equivalent of what we face now [with climate… — James Hansen Copy Share Image
How long have we got? We have to stabilize emissions of carbon dioxide within a decade, or temperatures will warm by more… — James Hansen Copy Share Image
The forcings that drive long-term climate change are not known with an accuracy sufficient to define future climate change. — James Hansen Copy Share Image
A level of no more than 350 ppm is still feasible, with the help of reforestation and improved agricultural practices, but just… — James Hansen Copy Share Image
Rising carbon price is essential to 'decarbonize' the economy - to remove the nation towards the era beyond fossil fuels. — James Hansen Copy Share Image
Coral reefs, the rain forest of the ocean, are home for one-third of the species of the sea. Coral reefs are under… — James Hansen Copy Share Image
CEOs of fossil energy companies know what they are doing and are aware of long-term consequences of continued business as usual. In… — James Hansen Copy Share Image
After spending three or four years interacting with the Bush administration, I realized they were not taking any actions to deal with… — James Hansen Copy Share Image
...chief executives of large fossil fuel companies to [should] be put on trial for high crimes against humanity and nature; [Hansen] accusing… — James Hansen Copy Share Image
If humanity wishes to preserve a planet similar to that on which civilisation developed and to which life on Earth is adapted,… — James Hansen Copy Share Image
Our analysis shows that, for the extreme hot weather of the recent past, there is virtually no explanation other than climate change.… — James Hansen Copy Share Image
The last time the world was three degrees warmer than today-which is what we expect later this century-sea levels were 25m higher.… — James Hansen Copy Share Image
Politicians think that if matters look difficult, compromise is a good approach. Unfortunately, nature and the laws of physics cannot compromise -… — James Hansen Copy Share Image
Goals and caps on carbon emissions are practically worthless, if coal emissions continue, because of the exceedingly long lifetime of carbon dioxide… — James Hansen Copy Share Image
...the global surface albedo [surface whiteness] and greenhouse gas changes account for practically the entire global climate change. — James Hansen Copy Share Image
The trains carrying coal to power plants are death trains. Coal-fired power plants are factories of death. — James Hansen Copy Share Image
Being at NASA and having the access to both computing capability and satellite observation capability is kind of the ideal research situation… — James Hansen Copy Share Image
The climate is nearing tipping points. Changes are beginning to appear and there is a potential for explosive changes, effects that would… — James Hansen Copy Share Image
We cannot afford to put off change any longer. We have to get on a new path within this new administration. We… — James Hansen Copy Share Image
I have been described as the grandfather of climate change. In fact, I am just a grandfather and I do not want… — James Hansen Copy Share Image
The greatest danger hanging over our children and grandchildren is initiation of changes that will be irreversible on any time scale that… — James Hansen Copy Share Image
Planet Earth, creation, the world in which civilization developed, the world with climate patterns that we know and stable shorelines, is in… — James Hansen Copy Share Image
Burning all the fossil fuels will destroy the planet we know, Creation, the planet of stable climate in which civilization developed. — James Hansen Copy Share Image
Climate change is analogous to Lincoln and slavery or Churchill and Nazism: it's not the kind of thing where you can compromise. — James Hansen Copy Share Image
Cap and trade generates special interests, lobbyists, and trading schemes, yielding non-productive millionaires, all at public expense. The public is fed up… — James Hansen Copy Share Image
We have at most ten years - not ten years to decide upon action, but ten years to alter fundamentally the trajectory… — James Hansen Copy Share Image
What is frustrating people, me included, is that democratic action affects elections but what we get then from political leaders is greenwash. — James Hansen Copy Share Image
The five-year mean global temperature has been flat for the last decade — James Hansen Copy Share Image
What makes tar sands particularly odious is that the energy you get out in the end, per unit carbon dioxide, is poor. It's equivalent… — James Hansen Copy Share Image
We are on the precipice of climate system tipping points beyond which there is no redemption. — James Hansen Copy Share Image
Jail threats did not dissuade Martin Luther King - and intergenerational justice is a moral issue of comparable magnitude to civil rights. — James Hansen Copy Share Image
The United States did not sign Kyoto, yet its emissions are not that different from the countries that did sign it. — James Hansen Copy Share Image
The five-year mean global temperature has been flat for the last decade, which we interpret as a combination of natural variability and a slow… — James Hansen Copy Share Image
Rising carbon price is essential to 'decarbonize' the economy - to remove the nation towards the era beyond fossil fuels. — James Hansen Copy Share Image
Policy decisions on climate change are being deliberated every day by those without full knowledge of the science, and often with intentional misinformation spawned… — James Hansen Copy Share Image
Imagine a giant asteroid on a direct collision course with Earth. That is the equivalent of what we face now [with climate change], yet… — James Hansen Copy Share Image
The most difficult task, phase-out over the next 20-25 years of coal use that does not capture COâ‚‚, is Herculean, yet feasible when compared… — James Hansen Copy Share Image
![“Imagine a giant asteroid on a direct collision course with Earth. That is the equivalent of what we face now [with climate change], yet we dither.” quote by James Hansen](https://sms4smile.com/quotes/img-quotes/ca3/james-hansen-7143_asteroids_imagine-a-giant-asteroid-on-a-direct-col_643017.jpg)
![“...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.” quote by James Hansen](https://sms4smile.com/quotes/img-quotes/29b/james-hansen-7143_accusing_chief-executives-of-large-fossil-fuel-co_1468352.jpg)
![“If humanity wishes to preserve a planet similar to that on which civilisation developed and to which life on Earth is adapted, paleoclimate evidence and ongoing climate change suggest that CO₂ will need to be reduced from its current 385 ppm [parts per million] to at most 350 ppm... If the present…” quote by James Hansen](https://sms4smile.com/quotes/img-quotes/4b3/james-hansen-7143_adapted_if-humanity-wishes-to-preserve-a-planet_1183760.jpg)
![“Our analysis shows that, for the extreme hot weather of the recent past, there is virtually no explanation other than climate change. The deadly European heat wave of 2003, the fiery Russian heat wave of 2010 and catastrophic droughts in Texas and Oklahoma last year [2011] can each be attributed…” quote by James Hansen](https://sms4smile.com/quotes/img-quotes/9f5/james-hansen-7143_analysis_our-analysis-shows-that-for-the-extreme_1947281.jpg)
![“...the global surface albedo [surface whiteness] and greenhouse gas changes account for practically the entire global climate change.” quote by James Hansen](https://sms4smile.com/quotes/img-quotes/34b/james-hansen-7143_accounts_the-global-surface-albedo-surface-whiten_1246456.jpg)
