William Gail is a meteorologist and past president of the American Meteorological Society. He is the author of Climate Conundrums: What the Climate Debate Reveals About Us, which examines, in part, the objections of some religious groups to climate change science. He is co-founder and chief technology officer of Global Weather Corp. in Boulder, Colo.

Interfaith Power & Light works to mobilize faith communities in response to global warming. The organization has affiliates in more than 35 states and is based in San Francisco. Susan Stephenson is executive director.