“We have known since the 1800s that carbon dioxide traps heat in the atmosphere. The right amount keeps the climate conducive to human life.”

James Hansen

“Consider the perverse effect cap and trade has on altruistic actions. Say you decide to buy a small, high-efficiency car. That reduces your emissions, but not your country's. Instead it allows somebod...”

James Hansen

“Money has too big an influence on our politics in Washington and somehow we need to do something about that.”

James Hansen

“I've tried to be a straight scientist doing the science and reporting it as best I can.”

James Hansen

“What has become clear from the science is that we cannot burn all of the fossil fuels without creating a very different planet.”

James Hansen