SATURDAY NEWS: * Kevin Drum on who's protecting the oil industry . And media darling Rand Paul steps up to the plate with another winner . * "What's behind the rash of Chinese school stabbings ?" * Glenn Greenwald on the backlash against Wikileaks . * Video: Jay Smooth on what everyone is getting wrong about Rand Paul's gaffe. * Follow-up: the Texas Board of Education swings even lower . * 'The Christian Right's gay problem .' * Japan launches Akatsuki probe to study Venus's atmosphere . * Nifty: pics from the abandoned Virginia Renaissance Festival . * Dear lord. The computer program that's writing classical music .