Cosmic shrapnel that killed the mammoth is buried deep, scientists claim

For hundreds of thousands of years, the woolly mammoth thrived on Earth, measuring its stately stride over the frozen lands. Then something happened. The earth has changed. And in a remarkably short time the mammoths (Mammuthus primigenius) had disappeared; the last became extinct 4,000 years ago, on remote Wrangel Island in the cold Arctic. Although … Read more