Scenes from the People's Climate March in New York City

Marchers on Central Park South
Marchers make their way across Central Park South during the People's Climate March.
TIMOTHY A. CLARY/AFP/Getty Images

Activists say climate change is destroying the Earth and tens of thousands of them took to the streets of cities around the world Sunday to urge policymakers to take quick action. Organizers say more than 100,000 marched in New York City alone, including a contingent from Minnesota, ahead of Tuesday's U.N. Climate Summit.