Earthquakes of unprecedented magnitude will destroy our metropolises. New mountains will rise right in the middle of the skyscrapers! And the remains of the ravaged neighborhoods will be swallowed up by a mega glacier. But the dead silence won’t last long. Soon, a comet will appear in the sky and turn the remnants of civilization into lava and ash! Our planet has cycles of catastrophic events that sometimes stretch for millions of years, and therefore, they are very difficult to notice.