John Tierny in The New York Times:
Why, since President Obama promised to “restore science to its rightful place” in Washington, do some things feel not quite right? First there was Steven Chu, the physicist and new energy secretary, warning The Los Angeles Times that climate change could make water so scarce by century’s end that “there’s no more agriculture in California” and no way to keep the state’s cities going, either. Then there was the hearing in the Senate to confirm another physicist, John Holdren, to be the president’s science adviser. Dr. Holdren was asked about some of his gloomy neo-Malthusian warnings in the past, like his calculation in the 1980s that famines due to climate change could leave a billion people dead by 2020. Did he still believe that?
“I think it is unlikely to happen,” Dr. Holdren told the senators, but he insisted that it was still “a possibility” that “we should work energetically to avoid.” Well, I suppose it never hurts to go on the record in opposition to a billion imaginary deaths. But I have a more immediate concern: Will Mr. Obama’s scientific counselors give him realistic plans for dealing with global warming and other threats? To borrow a term from Roger Pielke Jr.: Can these scientists be honest brokers? Dr. Pielke, a professor in the environmental studies program at the University of Colorado, is the author of “The Honest Broker,” a book arguing that most scientists are fundamentally mistaken about their role in political debates. As a result, he says, they’re jeopardizing their credibility while impeding solutions to problems like global warming.
More here.