Saturday, July 7 Live Earth concert

This Saturday, July 7, is the Live Earth concert. It's pretty impressive: 24 hours, 7 continents, 2 billion people. But it's more than a one-day event. It's a challenge -- to nations and individuals -- to do something about climate change. 7 pm on NBC and Telemundo. And all day long on Bravo! And there are lots of watch parties around town... check it out at moveon.org