Yuval Noah Harari, macro-historian, Professor, best-selling author of “Sapiens” and “Homo Deus,” and one of the world’s most innovative and exciting thinkers, discusses his newest work, “21 Lessons for the 21st Century.” Described as a “truly mind-expanding” journey through today’s most pressing issues, “21 Lessons for the 21st Century” reminds us to maintain our collective focus in the midst of dizzying and disorienting change.