Greta Thunberg is a teenage Swedish environmental activist. You've undoubtedly seen her speech at the 2019 U.N. climate action summit in New York, as it went massively viral.
In it, she gives an angry, impassioned plea to world leaders to take climate change seriously, saying that we are on the precipice of a mass extinction, and that their greed and denial of science has stolen her future.
Her demands for a cleaner, greener society was met with cheer from many, criticism from some, and memes from all.
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