Bjørn Lomborg
Author of The Skeptical Environmentalist and Cool It, head of the Copenhagen Consensus Center, and adjunct professor at Copenhagen Business School.

Imagine that over the next 70 or 80 years, a giant port city—say, Tokyo—found itself engulfed by sea levels rising as much as 15 feet or more. Millions of inhabitants would be imperiled, along with trillions of dollars worth of infrastructure.

This awful prospect is exactly the s