You were close. It's Bjorn Lomborg. His book, The Skeptical Environmentalist: Measuring the Real State of the World, is absolutely essential reading, and an essential reference manual, for anyone who wants to employ well researched, impeccably gathered hard facts with which to refute the environmentalist Cassandras.
He is really impressive, at least he comes across that way on television.
I watched him on "Now", when Moyers was moderating a discussion about different threats posed to the environment. I think this occurred during one of the myriad, useless global summits dealing with global warming.
I was struck by how easily he refuted his opponent's arguments, especially when they were debating the relative merits of government spending for anti-Global Warming research vs. inoculating millions of children with life saving vaccines.