Earth Day is celebrated today throughout the world and environmentally conscious celebrities such as Leonardo DiCaprio and Ed Norton also participated in the campaigns 'Billion Acts of Green Campaign', which is the theme of Earth Day 2011. More than 100 million green campaign movement has been run by people around the world. Leonardo DiCaprio has pledged to donate $ 1 million to the World Wildlife Fund (WWF) for tiger conservation. He also worked with WWF to launch SaveTigersNow.org .
While Ed Norton to run a marathon around New York with the Maasai tribe of Tanzania, to support the Maasai Wilderness Conservation Trust, which generate more than $ 1 million through fundraising on the site Crowdrise.com. Singer Jewel perform a charity concert for the Clearwater Project, raising funds for educating developing countries about the importance of the right to have clean water. Earth Day is a day that is celebrated to promote environmental sustainability. Earth Day was sparked by the United States senator, Gaylord Nelson, on April 22, 1970.