is the general manager of health rankinhgs at U.S. News & World Report. He was previously a health and science editor there. Until June 2007, he was a staff writer at Science News magazine and acting editor of sciencenews.org and sciencenewsforkids.org. His writing has appeared in the Los Angeles Times, NationalGeographic.com, Popular Mechanics, Popular Science, Slate, USA Today, U.S. News & World Report, and the Washington Post, among other publications. He is a former editor in chief of the Let's Go travel guidebook series.