MNN Galleries

12 moments of Earth Day

view of Earth from space

Photo: Алексей Пинчук/iStockphoto

1 of 14

12 moments of Earth Day

From sand sculptures and free condoms to recycled murals and "trashy" clothing, people across the globe are celebrating the 40th anniversary of Earth Day in unique ways.

Earth Day was established in 1970 by U.S. Sen. Gaylord Nelson as a way to increase awareness about environmental issues and inspire appreciation for the planet, and since then, the day has spawned annual festivals, concerts, rallies and tree-planting ceremonies.