ILLEGAL CONSUMPTION OF NARCOTIC DRUGS, PSYCHOTROPIC SUBSTANCES, THEIR ANALOGUES CAUSES HARM TO HEALTH, THEIR ILLEGAL CIRCULATION IS PROHIBITED AND ENTAILS LIABILITY ESTABLISHED BY LAW. This is the third book by Yuval Harari, the author of the bestsellers "Sapiens: A Brief History of Humankind" and "Homo Deus: A Brief History of Tomorrow," published in 50 languages worldwide. In it, the forty-three-year-old history professor, considered the brightest thinker of our time, addresses today's problems. What is happening in the modern world and what is the deeper meaning of these events? Why is liberal democracy experiencing a crisis? How to deal with the epidemic of fake news? How not to become slaves to computer algorithms? Will it be possible to prevent ecological collapse? Is there really a return to religion? How to fight terrorism? Will there be a new world war? Whether humanity can find adequate answers to the challenges faced in the 21st century will determine whether planet Earth and its inhabitants will exist in the next century.