Usa Barack Obama World Earth Day

epa02128363 US actress Sigourney Weaver (R) waits in the crowd at an Earth Day reception in the Rose Garden at the White House in Washington, D.C., USA, on 22 April 2010. Earth Day is celebrated around the world annually on 22 April to inspire awareness ofappreciation for the earth's environment.  EPA/BRENDAN HOFFMAN / POOL