The man is dangerous
This loony scientist-turned-climate-activist is reckless with science and his unfounded claims of peril are a threat to public order. Even his followers cannot believe he really said the oceans will boil, but here is the evidence. Should you not believe my biased sceptical transcript, just read his lips.
James Hansen: The Runaway Greenhouse Effect (video posted Jan 10, 2012)
At 1:55 (the link goes straight there) Hansen poses the question:
What is the runaway greenhouse effect?
Which he answers concisely and unambiguously:
That means once the planet gets warmer and warmer then the oceans begin to evaporate, and water vapour is a very strong greenhouse gas, even more powerful than carbon dioxide, so you can get to a situation where it just… the oceans will begin to boil and the planet becomes so hot that the ocean ends up in the atmosphere and that happened to Venus. That’s why Venus no longer has carbon in its surface. It’s atmosphere is made up of… basically of carbon dioxide because it had a runaway greenhouse effect.
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