UXBRIDGE, CANADA — Lester Brown says his views sometimes appear extreme - because the mainstream media largely doesn't understand the urgency and challenges in avoiding catastrophic climate change. The founder and president of the Washington-based Earth Policy Institute, he is also considered by many to be one of the world's most influential thinkers. "It looks like I'm a radical because the mainstream media aren't reflecting the reality of our situation," Brown says. A farmer from the eastern U.S. state of New Jersey, Brown entered the U.S. Civil Service in the 1960s, becoming an expert on foreign agricultural policy before leaving...