Live Earth, a nine-concert, global celebration happening this Saturday, July 7th.
What is Live Earth?
Live Earth is a series of nine concerts held across all seven continents on July 7, 2007. The goal of the concert is to use the “global reach of music to engage people on a mass scale to combat our climate crisis.” More than 150 of the world’s top musicians are participating in these concerts. An audience of 2 billion will be brought together at the concerts and through television, radio, film and the Internet.
From  http://www.liveearth.org/
Click on the link below to learn more.