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Clean Up the World Weekend

Clean Up the World Weekend, held in conjunction with the United Nations Environment Programme (UNEP), mobilizes an estimated 35 million volunteers from 130 countries annually, making it one of the largest community-based environmental campaigns in the world. It brings together businesses, community groups, schools, governments and individuals in a range of activities and programs that positively improve local environments.

Learn more at:

Earlier Event: September 4
National Wildlife Day
Later Event: September 21
Zero Emissions Day