https://www.upi.com/News_Photos/lp/9618a9c85874ad9801a1879cdbfab881/
https://www.upi.com/News_Photos/view/upi/9618a9c85874ad9801a1879cdbfab881/Earth-Day-celebration-on-the-National-Mall-in-Washington/
NEWS, NATIONAL MALL, EARTH DAY
UPI
UPI
https://cdnph.upi.com/pv/upi/9618a9c85874ad9801a1879cdbfab881/Earth-Day-on-the-Mall-2009.jpg
Earth Day celebration on the National Mall in Washington
An attendee rides a bike that powers a light bulb at the Earth Day on the Mall concert on the National Mall in Washington on April 19, 2009. (UPI Photo/Kevin Dietsch)