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.

It's as certain that as long as fossil fuels are the cheapest energy, we will just keep burning them.

The trains carrying coal to power plants are death trains. Coal-fired power plants are factories of death.

James Hansen Quotes