Castigating the powerful has become routine for the 16-year-old. In December, she addressed the U.N. Climate Change Conference in Poland; in January she berated billionaires at the World Economic Forum in Davos, Switzerland. Her London speech was the last stop of a tour that included meeting the Pope. (“Continue to work, continue,” he told her, ending with, “Go along, go ahead.” It was an exhortation, not a dismissal.)
Just nine months ago, Thunberg had no such audiences. She was a lone figure sitting outside the Swedish Parliament in Stockholm, carrying a sign emblazoned with Skolstrejk for Klimatet (School Strike for Climate). She was there for a reason that felt primal and personal. While Thunberg was studying climate change in school at the age of 11, she reacted in a surprisingly intense way: she suffered an episode of severe depression. After a time it lifted, only to resurface last spring.
“I felt everything was meaningless and there was no point going to school if there was no future,” Thunberg says. But this time, rather than suffer the pain, she decided to push back at its cause, channeling her sadness into action. “I promised myself I was going to do everything I could do to make a difference,” she says.