Anyone who has so much as glanced at the news in recent years will have heard of Greta Thunberg. 2023 sees the environmental campaigner celebrate her 20th birthday, yet she already secured her place in history as one of, if not the most influential activists of the century. She has been nominated for the Nobel Peace Prize four times, named as Time magazine’s youngest-ever Person of the Year, and included in Forbes’ list of the 100 Most Powerful W...