Teen activists like Sweden's Greta Thunberg appeared before Congress on Wednesday, urging lawmakers to take immediate action to curb climate change. Thunberg and fellow teen climate activists Jamie Margolin, Vic Barrett, and Benji Backer testified before the House Foreign Affairs Subcommittee on Europe, Eurasia, Energy, and the Environment and the House Select Committee on the Climate Crisis. The activists, who are planning to help lead a major Global Climate Strike demonstration on Friday to call for sweeping mobilization and an "end to the age of fossil fuels," also submitted the Intergovernmental Panel on Climate Change's United Nations report. "I want you to listen to the scientists and I want you to unite behind science," Thunberg testified. "And then I want you to take real action."

Scroll for 5 things you
need to know now