Global Warming: What We Knew in 1982 (10:30)

In 1982, Mike MacCracken, then a senior researcher at Livermore Laboratory, gave a lecture at Sandia Labs on the subject of global climate change. At the University of Michigan not long ago, Dr. MacCracken was asked, if he were to give the lecture today, what would be changed, and what would be the same….Continue Reading Global Warming: What We Knew in 1982 (10:30)

“Why I must speak out about climate change” (18:00)

Top climate scientist James Hansen tells the story of his involvement in the science of and debate over global climate change. In doing so he outlines the overwhelming evidence that change is happening and why that makes him deeply worried about the future….Continue Reading “Why I must speak out about climate change” (18:00)