At the age of 15, Greta Thunberg sat alone in front of the Swedish parliament for the first time. Five years ago, she founded Fridays for Future, followed by hundreds of thousands worldwide.
After 250 weeks, it's over. The climate activist met Pope Francis in St. Peter's Square after his general audience. She arrived by train to produce less climate-damaging CO2 emissions in Davos in January 2019. She met with UN Secretary-General António Guterres, among others.