Danish statistician, author of The Skeptical Environmentalist (2001) and one of the TIME 100 Scientists & Thinkers of 2004, Bjorn Lomborg, 42, sat down with TIME's Laura Blue in London to discuss carbon cuts, his many critics, and his new book, Cool It: the Skeptical Environmentalist's guide to Global Warming, published in the U.S. in September 2007. Watch the full interview