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

James Hansen, NASA Scientist Who Raised Climate Change Alarm, Is Retiring : The Two-Way But the man who issued one of the earliest warnings about the potential for global warming isn't going away ...

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 ...

Legendary climate scientist James Hansen, in a new study published Thursday, predicts that the Earth's temperature rise will accelerate in the upcoming decades and will reach 2 degrees Celsius ...

Thirty-five years ago, NASA climate scientist James Hansen stood in front of Congress with a bold declaration: Humans are causing an increase in greenhouse gas emissions, and it’s changing our ...

When climate scientist James Hansen spoke up about climate change in the 1980s, he risked the loss of his job & reputation. But, he says, it was worth it — because he could not be silent about ...

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 ...

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

James Hansen, a devoted activist against climate change, announced his retirement from NASA's Goddard Institute for Space Studies and plans to challenge federal and state governments over ...

James Hansen became the face of climate science 35 years ago with high-profile appearances before Congress, calling attention to global warming.Hansen is widely respected for his research on ...

James Hansen. Photo: nasa.gov James Hansen, NASA’s top climate expert, believes scientists have an obligation to speak out when their findings have important implications for the public — and ...