...the global surface albedo [surface whiteness] and greenhouse gas changes account for practically the entire global climate change.
James HansenBurning all the fossil fuels will destroy the planet we know, Creation, the planet of stable climate in which civilization developed.
James HansenSeveral 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