Most of North America’s megafauna—mastodons, short-faced bears, giant ground sloths, saber-toothed cats and American camels and horses disappeared close to 13,000 years ago at the end of the Pleistocene period. The cause of this massive extinction has long been debated by scientists who, until recently, could only speculate as to why. A group of scientists, […]
Fingerprint Of A Global Cataclysm 12,800 Years Ago
The graphic shows the vast swathe of our planet that geologists call the Younger Dryas Boundary Field. The tell-tale traces of multiple impacts by the fragments of a giant comet have been found across this huge “fingerprint”, spanning North America, Central America, parts of South America, most of Europe and parts of the Middle East […]