What really killed the wooly mammoth? Have scientists solved the mystery of the Viking sunstone? And do happy people live longer? Science's Daniel Strain chats about these stories and more with Science's Online Editor Stewart Wills.
What really killed the wooly mammoth? Have scientists solved the mystery of the Viking sunstone? And do happy people live longer? Science's Daniel Strain chats about these stories and more with Science's Online Editor Stewart Wills.
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