Around four million young people are estimated to have taken to the streets in thousands of cities and towns worldwide for a day of global climate protests last Friday.

Around four million young people are estimated to have taken to the streets in thousands of cities and towns worldwide for a day of global climate protests last Friday. Berlin, Melbourne and London were among the cities that saw thousands of participants rallying against global warming, while in New York City, organizers estimated that 250,000 people marched through the narrow streets of Lower Manhattan.

16-year-old Swedish climate activist Greta Thunberg, whose one-person strikes in Stockholm helped ignite a global movement, told demonstrators in New York City. “We demand a safe future. Is that really too much to ask?”