James Hansen on Copenhagen

http://www.newscientist.com/blogs/shortsharpscience/2009/12/outspoken-us-climate-scientist.html

"This is analogous to the issue of slavery faced by Abraham Lincoln or the issue of Nazism faced by Winston Churchill. On those kind of issues you cannot compromise. You can't say let's reduce slavery, let's find a compromise and reduce it 50% or reduce it 40%."