The scientist who first warned of climate change says it’s much worse than we thought

The rewards of being right about climate change are bittersweet. James Hansen should know this better than most — he warned of this whole thing before Congress in 1988, when he was director of NASA’s Institute for Space Studies. At the time, the world was experiencing its warmest five-month run since we started recording temperatures 130 years earlier. Hansen said, "It is time to stop waffling so much and say that the evidence is pretty strong that the greenhouse effect is here."

Fast forward 28 years and, while we’re hardly out of the Waffle House yet, we know much more about climate change science. Hansen is still worried that the rest of us aren’t worried enough.

By Amelia Urry

Full Story: http://grist.org/science/the-scientist-who-first-warned-of-climate-change-says-its-much-worse-than-we-thought/