New brochures and a web site providing basic facts about green power are so popular, the non-profit group that produced them can barely keep up with demand. The Renewable Energy Policy Project (REPP) has almost run out of the "Green Guide to Clean Electricity" in the five or so months since it was issued in the US. "We really were not prepared for the response," says the group's Roby Roberts. "Our conclusion is that there's not a lot of good strong information out there-nobody's doing mass education." The group printed 18,000 copies of the leaflet. Requests are coming in from around the world, including wind friendly countries such as Germany and Denmark, as well as from regions such as the Middle East and South America. The REPP material notes concisely that the electric power system is the largest single source of industrial air pollution in the nation and lists a series of facts about the effects of that pollution and alternative technologies available, like wind.