350—the magic number

Watch, learn and be horrified by this speech by the CEO of a major, major coal corporation. He is a global warming denier who thinks that if you disagree with him, you are an atheist and a communist. Then read this essay by Bill McKibben. James Hansen, the original global warming congress-testifier, is back with a news-you-can-use number: 350. That's the parts per million to which we need to reduce CO2 if we are to have a chance of limiting the catastrophe that has already begun. We are currently at 385 and rising.