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. This is shown in a new study conducted at Stockholm University and published in Communications Biology.
Masticate being examined [Credit: Natalija Kashuba/
Stockholm University]There are few human bones of this age, close to 10 000 years old, in Scandinavia, and…
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