Global Warming: Undo It is a national campaign developed by Environmental Defense "to ramp up the fight against global warming, the most critical environmental issue we face." The Web site contains a multimedia tutorial of sorts, where users can learn more about global warming and lifestyle changes they can make cut down on their carbon dioxide production. The site also includes a multimedia gallery, with video clips of the campaign's television commercials, an interview with Environmental Defense president Fred Drupp and another with Senator John McCain, and more. Users may also choose to sign an e-petition to help get the McCain-Lieberman bipartisan Climate Stewardship Act passed in Congress.