The Swedish teenager who has sparked a youth-driven push for action on climate change has taken part in a protest in Washington.

Greta Thunberg joined about 1,500 protesters, many of them schoolchildren, who marched and chanted near the White House.

The 16-year-old has gained international attention by inspiring protests and school strikes demanding immediate action to avert environmental catastrophe.

Youth Climate
Greta Thunberg attended a the protest in Washington Susan Walsh/AP)

Her activism has drawn a passionate following of children challenging their elders to take action.

Last month, Greta crossed the Atlantic Ocean in a solar-powered boat, landing in New York on August 28.

She is in Washington for several days of rallies and lobbying efforts in advance of a global climate strike declared for September 20.

Youth Climate
The protest took place near the White House in Washington (Susan Walsh/AP)

She will also address the UN Climate Action Summit in New York on September 23.