At New York City’s climate strike, where this photo was taken, thousands of people rallied for climate action.

Millions of people gathered worldwide to call for urgent action on climate change during the Global Climate Strike today (September 20). According to a tweet from climate activist Greta Thunberg, 139 countries held rallies. In Manhattan, at least 100,000 people gathered, according to USA Today. The strikes were organized by young people across the world as part of the Fridays for Future campaign founded by Thunberg, and New York City schools excused students to participate. 

The events were timed to take place just ahead of two major United Nations climate summits: the Youth Climate Summit, the first UN Climate Summit for young people, on Saturday (September 21), and the 2019 Climate Action Summit on Monday (September 23). Government and business leaders are meeting on Monday with...

See “Scientists Join Teens in Global Climate Strike

Emily Makowski is an intern at The Scientist. Email her at

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