If you haven’t seen the episode of Cosmos where greenhouse gases are discussed, find it on the Internet or your iPad or iPhone or whatever and watch it. It’s the simplest and clearest explanation I have ever heard of the phenomenon. To say nothing of how frightening the future will be, not for us, but for our children and our children’s children if we don’t act now. How much longer do we think we can keep our head stuck in the ground before the ground gets so hot it cooks what’s left of our brains?