I have to ask- how much will electric costs/veh or household rise if/when folks to to all electric. Sure the sun can charge, and those huge ugly wind farms...but unless we find cheaper fuel when ALL 6 billion of us are using it...monopoly energy companies will be there. As for fossil fuel? We have it- and the US will just sell it abroad. Does that make greenhouse issues any less important? Personally, I like solar because my ass has been out of power for storm after storm. Maybe propane/natural gas backup. But for the entire planet? We have a long ways to go.. I also think that any group that even thinks of building another hydroelectric plant (dam) should be hung from the nearest tree. they have ruined our wildlife.