There are infinitely many catastrophes in world history. They happened in ancient times, and they still happen now. The book tells about the 500 greatest disasters in human history. The reader will find in it interesting facts about the most terrible incidents in the world - airliner crashes, mysterious UFO invasions, tragic flights into space, unknown details of the Chernobyl accident and much more. Most of the disasters are classified. And therefore, any facts and hypotheses arouse interest. The reader has never seen such a collection of emergency incidents under one cover. This book will finally allow us to lift the veil on the loudest and most secret world catastrophes.