Crater of Death

This is the profile of an extraterrestrial mass murderer: one whose existence was denied by scientific orthodoxy for nearly two decades, but has now been tracked down. 65 million years ago a 15km wide asteroid hit the Earth. In 1978 Walter Alvarez, a Nobel-prize-winning physicist, and his son Luis, first proposed the outrageous idea that a meteorite strike blasted the dinosaurs into extinction, ta

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The Day The Earth Nearly Died

250 million years ago, long before dinosaurs roamed the Earth, the land and oceans teemed with life. This was the Permian, a golden era of biodiversity that was about to come to a crashing end. Within just a few thousand years, 95% of the lifeforms on the planet would be wiped out, in the biggest mass extinction Earth has ever known. What natural disaster could kill on such a massive scale? It is

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