Clean Up the World partners with the United Nations Environment Programme (UNEP) to inspire and assist communities to "clean up, fix up and conserve their local environment" through carrying out initiatives ranging from waste removal and tree planting to water and energy conservation projects. Clean Up the World and its participating organisations mobilise an estimated 35 million volunteers from more than 100 countries annually and carry out activities and longer-term environmental projects throughout the year however the campaign culminates in the Clean Up the World Weekend in 3rd weekend of September. Getting involved is simple contact the Sydney office of Clean Up the World on 9692 0700 or email info@cleanuptheworld.org.