Climate Scientist James Hansen Warns World is on Wrong Track to Prevent Runaway Global Warming

"Everybody would be better off if the price of fossil fuels was honest. It should include its cost to society." -- Climate scientist James Hansen

In 1988, James Hansen first warned about the dangers of climate change when he testified before Congress. At the time he was NASA’s top climate scientist. He would go on to become the nation’s most influential climate scientist. This year he is making his first appearance at a U.N. climate change summit. He has come to Paris to warn world leaders that they are on the wrong track to prevent dangerous global warming.