On this date three years ago, we launched an ongoing campaign toward solving the most critical environmental issues of our time along with dozens of partner organizations, hundreds of millions of citizens across 7 continents, and you.

Live Earth 07.07.07: The Concerts for a Climate in Crisis, featured 24 hours of live music staged concerts in New York, London, Sydney, Tokyo, Shanghai, Rio de Janeiro, Johannesburg and Hamburg - as well as special broadcast events in Antarctica, Kyoto and Washington, DC - and featured feature more than 150 of the world's best music acts - a mix of both legendary music acts like The Police, Genesis, Bon Jovi and Madonna with the latest headliners like Kanye West, Kelly Clarkson, Black Eyed Peas and Jack Johnson.

You answered the call on 07.07.07 and in fulfilling that pledge and carrying the momentum from that day forward, together continue taking action toward making the world a better and healthier place.

Before you watch the Live Earth concert videos below, make sure you're on our email list as well as the organizations that have been part of this movement since day one, including: the Alliance for Climate Protection, Avaaz, Repower America, 1sky, 350.org, WWF, and The Climate Group.

We remember July 7, 2007 as if it were yesterday. Were you lucky enough to attend a concert in person or did you watch on TV or the web? Please share your memories of Live Earth 07.07.07 in the comments below!