WASHINGTON, DC - SEPTEMBER 13:  Teenage Swedish climate activist Greta Thunberg delivers brief remarks surrounded by other student environmental advocates during a strike to demand action be taken on climate change outside the White House on September 13, 2019 in Washington, DC. The strike is part of Thunberg's six day visit to Washington ahead of the Global Climate Strike scheduled for September 20. (Photo by Sarah Silbiger/Getty Images)