Rebecca Lawson of Pennsylvania, US, and a missionary from Stewards of Creation, carries a sack of garbage after she joins students, environmental activists and volunteers collecting garbage in an effort to clean up the coast of the Paranaque coastal Habitat and Ecotourism area, home to a mangrove forest and a bird sanctuary, as part of the advanced commemoration of Earth Day in Manila April 20, 2013. [Photo/Agencies]

Students, environmental activists and volunteers collect garbage in an effort to clean up the coast of the Paranaque coastal Habitat and Ecotourism area, home to a mangrove forest and a bird sanctuary, as part of the advanced commemoration of Earth Day in Manila April 20, 2013. [Photo/Agencies]