It was the 1950's when the book "Worlds in Collision" was published and became the best seller for several years. The effects of the content of the book were increasing up to the point that many scientists and even universities were very interested in knowing more about the claims made by its author Immanuel Velikovski. It was the birth of a new approach to understand ancient history. But, the narration implied the removal of the conventional physics, history and even challenged some religious beliefs of those years. Then, scientists, historians, some religious leaders, many of them became enemies of Velikovski and they worked hard to sink his theories until they become forgotten. However, when the storm was over and the rest managed to close his publications, a rare scenario did occur. Suddenly "new scientific theories" appeared, all of them using the same principles found in Worlds in Collision, but instead of thousands of years ago as claimed in that book, the new theories claimed "millions of years ago". No matter what the new theories claim today with their millions of years of life on earth. The book Worlds in Collision still is the pioneer because explains without doubt the influence of planets and bodies from the cosmos getting near or hitting earth and changing the history of our planet. Catastrophe is an old thought which caused the extinction and appearance of species, but no one "prove it" up to the 1950's, because neither archeology or common understanding in those years ever thought the possibility of planets and comets causing it. Today, today you take for granted that comets, asteroids and more have changed the history of humanity, but such was not the belief in the 1950's. In those years the craters of the moon were caused "solely" by volcanic eruptions, in those years our solar system was taught to have been the same without changes of any kind for millions of years. In those years... you got the idea.... The greatest pioneer of modern archeology and history, he has been forgotten not because he was on error but because the erudite of those times weren't able to accept that their theories and knowledge were simply dead wrong. Each new discovery in disguised form is getting more close to the narrations of Velikovski. Now a new catastrophe caused by a comet or a celestial body has been calculated at 13,000 years ago. Asteroid or comet hit Earth 13,000 years ago and set much of North America on FIRE, boffins claim This is what Worlds in Collision book is about, another historical catastrophe which happened four thousand years ago, and caused not only the "biblical plagues of Egypt" but floods, obscurity, plagues in other parts of the planet, according to records obtained from China, India, Greece, Arabia.