Chill out, woolly mammoths aren't coming back just yet

Woolly mammoths won't be trouncing through the Arctic tundra anytime soon.
Contrary to recent headlines, which herald the extinct beast's coming resurrection, scientists are still a long way from figuring out how to revive the elephant ancestor.
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Woolly mammoths roamed the planet for hundreds of thousands of years before they vanished about 4,000 years ago. Paleontologists say the culprit for the die-off was po