What is Radio 1?
News headlines on air Weekdays 12.45 & 5.45pm
The aim was to raise awareness about climate change. 70,000 turned out at Wembley Stadium to watch the likes of Madonna, The Foo Fighters and Keane on stage. We catch some of the stars behind the scenes.
BBC Live Earth
Have your say: Global warming
Live Earth around the world
The BBC is not responsible for the content of external websites.