A future where small wind generators spin atop church steeples is one in which Mike Sandler believes. Sandler's organisation, California Interfaith Power and Light (CIPL), founded in 2001, sees global warming as the moral issue of our time. One belief all major faiths share, he says, is in calling on humanity to provide good stewardship of planet earth. CIPL, which features a stained glass rendering of a wind turbine for its logo, boasts 460 California congregations as members, along with 24 state affiliate programs representing about 4000 congregations nationwide. The group focuses on education, energy efficiency and advocacy -- and wind power is one of its main interests. Sandler points to a pair of polls that suggest about 5% of the US population belong to an environmental group, while 64% belong to a church or synagogue. "The faith community is a powerful potential ally in promoting wind power," Sandler says. "You can really reach a whole constituency if you're speaking the right language. Where some people may not be so receptive to hearing Al Gore say it, they might feel differently when their spiritual advisor says it."