BRUSSELS, BELGIUM - FEBRUARY 21: Greta Thunberg, climate activist speaks during a press conference organized by Belgian Youth for Climate with other activists from Europe on February 21, 2019 in Brussels, Belgium. (Photo by Maja Hitij/Getty Images)
BRUSSELS, BELGIUM - FEBRUARY 21: Greta Thunberg, climate activist speaks during a press conference organized by Belgian Youth for Climate with other activists from Europe on February 21, 2019 in Brussels, Belgium. (Photo by Maja Hitij/Getty Images)