40 Photos from Friday's Historic Global Climate Strike

Young people across the world rallied on Friday, September 20, 2019 to make a bold statement about climate change and the future of humanity. Sixteen-year-old Swedish activist Greta Thunberg started "Fridays for Future" in August 2018 to raise awareness about world leaders' lack of action to combat climate change. "Every Friday, we will sit outside of Swedish Parliament, until Sweden is aligned with the Paris Agreement," she said in a video on Twitter last September. Now on its 57th week, her movement has gone global—an estimated 300,000 people came out in Australia, and another 100,000 in Berlin. Thurnberg spoke at the events in New York City on Friday, where 1.1 million students were told they were allowed to skip class to take a stand. Here are just a few of the powerful scenes from the hundreds of marches.