“I’m sticking with the 2,500 scientists. These people have been studying this issue for a very long time and agree this problem is real,” said Ms. Browner, who President Obama has tapped as his chief of policy on global warming…

Ms. Browner said the only people who still doubt global warming is happening and that humans are to blame are “a very small group of people who continue to say this isn’t a real problem, that we don’t need to do anything.”

She also said the e-mails are only trickling out, and that the entire set hasn’t been released.