James E. Hansen and Peter Sarsgaard on Climate Change and Karma Dr. Hansen, whose congressional testimony in 1988 sounded an alarm on global warming, speaks with Mr. Sarsgaard, the actor and ...

Science New Research Led by James Hansen Documents Global Warming Acceleration The rapid meltdown of polar ice could shut down a key ocean current by 2050, triggering catastrophic surges of sea ...

Hansen's 1988 testimony before the Senate is widely considered to be a landmark event in the history of spreading public knowledge about Earth's rising temperatures.

"The 1.5-degree limit is deader than a doornail," said Hansen, whose 1988 congressional testimony on climate change helped sound the alarm of global warming.

CLIMATEWIRE | Climate scientist James Hansen is frustrated. And he’s worried. For nearly 40 years, Hansen has been warning the world of the dangers of global warming. His testimony at a ...

The scientist who warned the US about climate change says it’s worse than we thought. Again. A new study led by James Hansen estimates we'll hit the 1.5 degrees Celsius target earlier than ...

Hansen, a director at the Earth Institute at Columbia University, is a renowned climate scientist whose 1988 testimony to the US Senate first brought global attention to climate change.

Climate scientist James Hansen is frustrated. And he’s worried. For nearly 40 years, Hansen has been warning the world of the dangers of global warming. His testimony at a groundbreaking 1988 ...