The 16-year-old Swedish activist, who set sail from Plymouth, England, on Aug.
14, attracted international attention last year when she started missing school on Fridays to protest against political inaction on climate change and inspired youth around the world to do the same.
Rather than travel in an airplane that burns fuel and contributes to atmospheric carbon pollution, Thunberg opted to make her trans-Atlantic journey carbon emission-free by sailing on the Malizia II, a 60-foot yacht equipped with solar panels and underwater turbines that produce electricity onboard.
The boat has no shower or toilets, and those aboard including Thunberg's father and crew members planned to eat freeze-dried food throughout the trip.
In addition to the U.N.
Climate Action Summit in New York, Thunberg intends to join the COP 25 climate change conference in Santiago, Chile, in December.