In September 2019 at the United Nations Climate Action Summit, Greta Thunberg made headlines by condemning world leaders for abandoning today’s children to the ravages of climate change. “How dare you?” she asked, her voice shaking with anger. Truth-to-power moments like this alternate with quiet ones in “I Am Greta,” a documentary about Thunberg’s meteoric rise that suggests a new kind of hero.

Its director, Nathan Grossman, catches Thunberg early, in August 2018, when the teen (at age 15) begins a solo “school strike” in front of the Swedish parliament. Her blunt warnings about the environment catch on, and go global. “I Am Greta” joins her on the ensuing daisy chain of press gaggles, youth marches, United Nations speeches and meet-and-greets with Arnold Schwarzenegger, Emmanuel Macron and the Pope. https://www.nytimes.com/2020/11/12/movies/i-am-greta-review.html?auth=link-dismiss-google1tap