When young Greta learned of the climate crisis she stopped talking. She couldn't understand why people in power were not doing anything to save our Earth. One day she started striking from school in her 'School Strike for Climate'. Soon, lots more young people joined her, in a global movement that shook adults and politicians alike. She had found her voice, and she continues to use it to call people to action with her powerful message: 'No one is too small to make a difference.'