In this clip David Letterman interviews Bjorn Lomborg who used to be a climate change skeptic but recently has changed some of his ideas and now supports some aspects of climate change. Among what he says, I like his idea of not thinking of climate change as the end of the world. The impacts are going to be severe but I am personally against exaggeration. Watch this and I would write about Lomborg's documentary "Cool it" as soon as I get a chance to watch it.