Friday, September 12, 2008

American mammoths returned, dominated Asia

The first wooly mammoths lumbered over the Bering Straight land bridge into North America about 200,000 years ago. But they didn't stay put. The herds would wander back and forth between Asia and America, and eventually, the American stock would outlive the original Asian populations, reports New Scientist.

The report is based on mitochondrial DNA research performed by the University of London.

It's not likely that the American mammoths fought the Asians to the death. But the Americans may have out maneuvered the Asians for food, and more likely, the creatures were probably better suited for climactic changes that ultimately contributed to the extinction of all mammoths.

At the end of the last ice age, grasslands (which mammoths prefer) were replaced by forests. That combined with the rise of humans probably spelled the end for the giant pachyderms.

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I started pound360 to channel my obsession with vitamins, running and the five senses. Eventually, I got bored focusing on all that stuff, so I came back from a one month hiatus in May of 2007 (one year after launching Pound360) and broadened my mumblings here to include all science.