
High school students demonstrate against global warming at a Fridays for Future demonstration on March 01, 2019 in Hamburg, Germany. Fridays for Future is an international movement of students who, instead of attending their classes, take part in demonstrations demanding for action against climate change. The series of demonstrations began when 15-year-old Swedish activist Greta Thunberg staged such a protest outside the Swedish parliament building. (Photo: Adam Berry/Getty Images)