Thirty years ago last week, NASA scientist James Hansen testified to Congress that the age of climate change had arrived. The announcement shook the political establishment in 1988.

James Hansen, head of the NASA's Goddard Institute for Space Studies and author of the book, [Storms of My Grandchildren], spoke about climate science. He was also awarded the annual Stephen ...

Climate scientist James Hansen talks about global warming, Copenhagen, and his new book.

Climate change researcher James Hansen, the long-time head of NASA's Goddard Institute for Space Studies, is retiring from government employment to campaign for policies that he believes must be ...

"After nearly half a century of research in planetary and climate science for NASA, James E. Hansen is retiring on Wednesday to pursue his passion for climate activism without the hindrances that ...

James Hansen, a NASA climate scientist, thrust climate change into the public spotlight 30 years ago in front of a Senate committee.

Climate scientist James Hansen is retiring from NASA this week to devote himself to the fight against climate change. Hansen's retirement concludes a 46-year career at NASA's Goddard Institute for ...

When I testified before the U.S. Senate in the hot summer of 1988, I warned of the kind of future that climate change would bring to us and our planet. I painted a grim picture of the consequences ...

A new study lead by James Hansen, a scientist responsible for raising public consciousness about climate change in the 1980s, suggests global temperatures are increasing faster than expected.

JAMES HANSEN: Well, it’s clearly affected by climate change. Sea level is now, globally, eight inches higher than it would have been without global warming.

In a new paper, James Hansen warns sea levels could rise faster than climate scientists thought due to melting ice. Climate change, propelled by carbon emissions, could also lead to superstorms.

James Hansen, head of the NASA's Goddard Institute for Space Studies and author of the book, [Storms of My Grandchildren], spoke about climate science. He was also awarded the annual Stephen ...