Global Citizen 2015 Earth Day On National Mall To End Extreme Poverty And Solve Climate Change - Show

In This Photo: will.i.am, Charlie Bolden
NASA administrator Charlie Bolden and will.i.am speak onstage during Global Citizen 2015 Earth Day on National Mall to end extreme poverty and solve climate change on April 18, 2015 in Washington, DC. (Photo by Richard Chapin Downs Jr./Getty Images for Global Citizen) Charlie Bolden
(April 17, 2015 - Source: Richard Chapin Downs Jr./Getty Images North America) more pics from this album »