Meet the teenager whose one-person protest sparked a worldwide climate revolution! Discover more about this young eco-hero in our top ten Greta Thunberg facts…   Who is Greta Thunberg? 1) Greta Thunberg is an environmental activist. She was born in Stockholm, Sweden, in 2003. When she was eight, she started learning about climate change. The … Continue reading Greta Thunberg facts!