21 Lessons for the 21st CenturyThe bestselling phenomenon returns with 21 bite sized lessons to help us understand our troubled times. **THE NUMBER ONE BESTSELLER** In twenty one bite sized lessons, Yuval Noah Harari explores what it means to be human in an age of bewilderment. '21 Lessons is, simply put, a crucial book' Adam Kay How can we protect ourselves from nuclear war, ecological cataclysms and technological disruptions? What can we do about the epidemic of fake news or the