What are the biggest problems of the 21st century? Why can’t these problems be solved with nationalist politics? According to Yuval Noah Harari, an Israeli public intellectual and author of 21 Lessons for the 21st Century, the biggest problems of the 21st century are all global in nature, and therefore, they require an international response. They are three of them: 1) the nuclear threat, 2) the climate change, and 3) the dual rise of bio- and info-tech. Keep reading to learn about the three major 21st-century problems, according to Yuval Noah Harari.
The 21st-Century Problems: The Looming Challenges










