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From left, French Foreign Minister Laurent Fabius, primatologist Jane Goodall, former U.S. Vice President Al Gore, New York Mayor Bill de Blasio, and U.N. Secretary General Ban Ki-moon participate in the People's Climate March, in New York, Sept. 21, 2014.

People hold banners and dance during a Climate Change March demanding politicians take tougher action to protect the climate, in Berlin, Sept. 21, 2014.

Demonstrators make their way down Sixth Avenue during the People's Climate March, in New York, Sept. 21, 2014.

People hold posters during a Climate Change march to demand politicians take tougher action to protect the climate at Angel de la Independencia monument in Mexico City, Sept. 21, 2014.

From left, Designer Vivienne Westwood, musician Peter Gabriel and actress Emma Thompson join an estimated 40,000 people marching from the Embankment via Whitehall to the Houses of Parliament as part of the People's Climate March, in central London, Sept. 21, 2014.

Demonstrators make their way down Sixth Avenue during the People's Climate March, in New York, Sept. 21, 2014.

Actor and activist Mark Ruffalo (center left) and actor Leonardo DiCaprio (center right) join participants during the People's Climate March, in New York, Sept. 21, 2014.

People with a green heart painted on their faces attend the People's Climate March in the rain at Ipanema beach, Rio de Janeiro, Brazil, Sept. 21, 2014.

Activists hold a banner as they lead a march of tens of thousands down Sixth Avenue during the People's Climate March through Midtown, New York City, Sept. 21, 2014.

Demonstrators gather in Central Park before the People's Climate March, in New York, Sept. 21, 2014.

Thirty religious groups pack 58th Street waiting to join the People's Climate March, in New York, Sept. 21, 2014. (Rosanne Skirble/VOA)

Part parade, part protest, colorful floats lined the route from Central Park to the United Nations in New York, Sept. 21, 2014. (Rosanne Skirble/VOA)

Dozens of labor unions representing teachers, electricians, nurses and others march in the People's Climate March, New York, Sept. 21, 2014. (Rosanne Skirble/VOA)