Chewing gums reveal the oldest Scandinavian human DNA | The first humans who settled in Scandinavia more than 10,000 years ago left their DNA behind in ancient chewing gums, which are masticated lumps made from birch bark pitch

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Chewing gums reveal the oldest Scandinavian human DNA | The first humans who settled in Scandinavia more than 10,000 years ago left their DNA behind in ancient chewing gums, which are masticated lumps made from birch bark pitch