The End of Evolution Dinosaurs, Mass Extinction and Biodiversity
There have been two great mass extinctions in world history. The first took place 250 million years ago, and its causes, relating to the drift of the continents, are largely unresolved. The second, at 65 million years ago, brought to an end the Age of Dinosaurs. Again, the book argues, the causes were complex, but the culminating factor was one or more asteroids crasing into the Earth, unleashing fires, tidal waves and poisonous gases.