T. Rex And the Crater of Doom (Penguin Press Science S.) - Tapa blanda

Sixty-five million years ago, a comet or asteroid larger than Mount Everest fell from outer space and hit the Earth's surface. The environmental disasters that followed brought about the mass extinction of vast numbers of animal and plant species, among them the great carnivorous dinosaur, Tyrannosaurus Rex. In this thrilling tale of scientific detection, Walter Alvarez unfolds the quest for the answer to one of science's greatest mysteries as he and a team of scientists searched for evidence of a cataclysmic impact. Hotly disputed among the scientific community, the impact theory was vindicated when, in 1991, a massive crater buried beneath the Yucatan Peninsula was rediscovered by Alvarez.

Walter Alvarez is Professor of Geology and Geophysics at the University of California, Berkeley.