NASHVILLE (Billboard) - It would play right into the hands of critics if the seven Live Earth concerts to be staged worldwide July 7 were to come off in an unfriendly environmental way. And it's probably fair that no concerts in history will be more closely monitored for how well they manage power and waste. Live Earth producers want the world to watch what they do. "We want to make the concerts themselves part of the solution," Live Earth's Yusef Robb says. "What we're working very hard to do is something that has never been done before: establish a new...