Agence France-Presse: A wide-ranging probe into woolly mammoths has added to evidence that the towering tusker was wiped out by climate change, scientists said on Wednesday.
British and Swedish researchers sequenced DNA from 88 samples of mammoth bone, tooth and tusk, looking for a signature in the genetic code that is handed down on the maternal line.
They used this telltale to build a family tree of mammoths spanning 200,000 years, across northern Eurasia and North America.
They found two periods of big population...