Earth Day Observed Around the World

Members of an ecologist group known as ''Comando Borraja'' (Borage Commando) plant some vegetables and flowers in a street of Tudela village, northern Spain, in commemoration of Earth Day, April 22, 2017.

An Indonesian student plants a mangrove at Ujong Pancu beach in Aceh Besar, Aceh province, during an Earth Day event, April 22, 2017.

A Nepalese activist stands wrapped in a plastic sheet with a rope tied around her neck in Kathmandu as a mark of protest against air pollution on Earth Day, April 22, 2017.

Indian schoolgirls paint a tree trunk at a park to mark Earth Day in Kolkata, April 22, 2017.

Donna Stolz, a member of the board of directors of the Rachel Carson Trails Conservancy, picks up trash from the roadside along a portion of the trail named for the ecologist author of "Silent Spring" on Earth Day in Springdale, Pa., where Carson was born, April 22, 2017.

Kosovar musicians wearing face masks perform at the Mother Teresa square in Pristina as part of activities aimed at raising awareness of air pollution on Earth Day, April 22, 2017.

U.S. Energy Secretary Rick Perry, center left, talks with Texas Attorney General Ken Paxton while riding in a golf cart with others during a tour of Earth Day displays at Fair Park in Dallas, April 21, 2017.

A man walks past a mural the day before Earth Day, in Philadelphia, April 21, 2017.