http://www.amazon.com/Dinosaur-Killers-Alexander-Popoff-ebook/dp/B00JNM76QM http://www.amazon.com/Dinosaur-Killers-Alexander-Popoff/dp/1497390745 An asteroid killed off the dinosaurs? Are you kidding me? In this riveting nonfiction book, Alexander Popoff explains how the asteroid and volcano theories, which are prevalent among scholars, are not viable because they can’t explain many specifics of the Cretaceous-Paleogene (K-Pg) extinction: the presence of extraterrestrial amino acids in the soils for tens of thousands of years before and after the catastrophe, the loss of part of Earth’s atmosphere, the multiple spikes of iridium and extraterrestrial amino acids in the K-Pg boundary zone, the extraterrestrial soot and elemental carbon in the boundary layer, etc. Dinosaur Killers also resolves the longstanding riddle of why some species died off while others survived. In the words of the paleontologist Dr. Robert T. Bakker in The New York Times, “It is as if nature aimed a smart bomb at the animal kingdom, designed to kill off only certain groups.” The K comet extinction theory explains the killing mechanism behind this Cretaceous smart bomb. One of the most hotly contested questions in paleontology revolves around the three-meter gap in the fossil record immediately prior to the boundary layer, representing about 100,000 years. Most often, it is assumed that the dinosaurs were already extinct at the end of the Cretaceous. As a matter of fact, the dinosauria was still alive and kicking when the catastrophe killed off most of the species on Earth. You will find the conclusive answer to this riddle in the book. Popoff also presents a theory on the 1908 Tunguska meteorite mystery in Siberia, which can help us better understand the K-Pg mass extinction and the loss of atmosphere during that catastrophe. The book explains also why the huge dinosaur species did not need to be truly warm-blooded and why warm-bloodedness would have killed them in the hothouse Mesozoic world. Dinosaur Killers presents fascinating details about the ancient atmosphere, which determined some specifics of the Mesozoic world, making giant flying reptiles and 50-ton dinosaurs possible, and explains why such extraordinary animals could not live today and why it is not possible to reconstruct the original authentic Mesozoic world in an open habitat, including the dinosaurs, as Michael Crichton did in his fiction book Jurassic Park. Dinosaur Killers skillfully integrates elements of a research book with the narrative of a scientific detective story. The K comet extinction mechanism is an exceptional contribution to the study of dinosaur demise and the implications for the survival of humanity. Many scientists believe that if dinosaurs had continued to develop, they probably would have evolved sophisticated brains and would have created a civilization, landing on the Moon and roaming the Galaxy sixty-five million years before humans. The book also gives an overview of 146 other dinosaur extinction theories. The dinosaur extinction mechanism is finally revealed.