"You have stolen my dreams, and my childhood, with your empty words. And yet I'm one of the lucky ones," activist Greta Thunberg, 16, tells world leaders.
"We know it's happening. We need change. We demand better," an 11-year-old girl said at a march in Thailand. Protesters are calling for net-zero carbon emissions and other changes.
The young Swedish activist led a protest at the White House on Friday. But she wasn't looking to go inside. "I don't want to meet with people who don't accept the science," she says.
From St. Paul, Minn., to Stockholm, Sweden, students skipped school Friday to demand decisive action on climate change. Demonstrations were called in more than 100 countries and territories.
16-year-old Greta Thunberg has been the inspiration for many of the protests. She has staged weekly protests on the steps of the Swedish Parliament and spoke this week at Davos.