> Huh? > Sailboats are already solar powered. Where do you think wind comes > from? Following that line of argument - EVERYTHING is solar, or star, powered. Where do you think ANY energy source that anyone uses for anything comes from ? :-). Anything above iron has, it is generally believed, been made in a star mill - usually a Nova, less frequently a super nova. Iron is star ash. Below Iron there are options as to sources. Ultimately it all "just happened". The meaning of "just" here is hotly debated :-). There are NO energy "sources" - only energy converters from one form of stored energy to another. Russell -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist