In August 2018, 15-year-old Swedish student Greta Thunberg decided not to go to school in order to protest the climate crisis, and demand government action to prevent global warming. Her school strike sparked a global movement, inspiring millions of students to strike. Before she was 18 years old, Greta had participated in protests in Europe and North America, created a TED talk viewed more than 10 million times, and addressed the United Nations, the U.S. Congress, the British Parliament, and the World Economic Forum. In 2019, she was named Time magazine's person of the year, the youngest person ever to receive this recognition. This is her story.