In this book the catastrophic crashes on Earth caused by the previous inversion of the magnetic field of the Earth which occurred 12400 years ago are considered: earthquakes, tsunami and floods, death of mammoths and other animals, and also eruptions of volcanoes, death of Atlantis and other changes on the Earth's surface. The author gives excerpts from different scientific research and from reports of expeditions. Now on Earth there is a global warming. Different versions of the reasons of global warming and its consequence are considered: thawing of glaciers of Greenland and Antarctica, increase in global sea level and flooding of the territories. The theory "Magnetic field of Earth" developed by the author on the basis of laws of physics and electrodynamics is offered as an alternative for the explanation of the physical processes occurring in the Earth subsoil. The book covers the disaster on Mars, leading to the inhibition of rotation speed of Mars and, consequently, to the reduction of the magnetic field. This led to disappearance of the atmosphere and cooling of Mars. The conditions for increasing of the magnetic field of Mars are determined.