BRUSSELS, BELGIUM - FEBRUARY 21: Greta Thunberg, climate activist attends 7th Brussels youth climate march on February 21, 2019 in Brussels, Belgium. (Photo by Maja Hitij/Getty Images)
TOPSHOT - The Malizia II, a zero-carbon yacht, with Swedish climate activist Greta Thunberg, 16, arrives in the US after a 15-day journey crossing the Atlantic in on August 28, 2019 in New York. - "Land!! The lights of Long Island and New York City ahead," she tweeted early Wednesday. She later wrote on Twitter that her yacht had anchored off the entertainment district of Coney Island in Brooklyn to clear customs and immigration. (Photo by Johannes EISELE / AFP) / ALTERNATIVE CROP (Photo credit should read JOHANNES EISELE/AFP/Getty Images)
TOPSHOT - Swedish climate activist Greta Thunberg, 16, arrives in the US after a 15-day journey crossing the Atlantic in the Malizia II, a zero-carbon yacht, on August 28, 2019 in New York. - "Land!! The lights of Long Island and New York City ahead," she tweeted early Wednesday. She later wrote on Twitter that her yacht had anchored off the entertainment district of Coney Island in Brooklyn to clear customs and immigration. (Photo by Johannes EISELE / AFP) (Photo credit should read JOHANNES EISELE/AFP/Getty Images)
Swedish climate activist Greta Thunberg poses for a photograph during an inteview with AFP onboard the Malizia II sailing yacht at the Mayflower Marina in Plymouth, southwest England, on August 13, 2019 ahead of her journey across the Atlantic to New York where she will attend the UN Climate Action Summit next month. - A year after her school strike made her a figurehead for climate activists, Greta Thunberg believes her uncompromising message about global warming is getting through -- even if action remains thin on the ground. The 16-year-old Swede, who sets sail for New York this week to take her message to the United States, has been a target for abuse but sees that as proof she is having an effect. (Photo by Ben STANSALL / AFP) (Photo credit should read BEN STANSALL/AFP/Getty Images)
TOPSHOT - Swedish climate activist Greta Thunberg poses for a photograph during an inteview with AFP onboard the Malizia II sailing yacht at the Mayflower Marina in Plymouth, southwest England, on August 13, 2019 ahead of her journey across the Atlantic to New York where she will attend the UN Climate Action Summit next month. - A year after her school strike made her a figurehead for climate activists, Greta Thunberg believes her uncompromising message about global warming is getting through -- even if action remains thin on the ground. The 16-year-old Swede, who sets sail for New York this week to take her message to the United States, has been a target for abuse but sees that as proof she is having an effect. (Photo by Ben STANSALL / AFP) (Photo credit should read BEN STANSALL/AFP/Getty Images)