What are the biggest problems facing us in the 21st century?

While Harari's previous best sellers, Sapiens and Homo Deus, covered the past and future respectively, his new book is all about the present

21 LESSONS FOR THE 21ST CENTURY 
Yuval Noah Harari 
Penguin Random House
370 pages; Rs 799
 
The human mind wants to worry. This is not necessarily a bad thing — after all, if a bear is stalking you, worrying about it may well save your life. Although most of us don’t need to lose too much sleep over bears these days, modern life does present plenty of other reasons for concern: Terrorism, climate change, the rise of AI, encroachments on our privacy, even the apparent decline of international cooperation.
 
In his fascinating new book, the historian Yuval Noah