Oldest Scandinavian human DNA found in ancient chewing gum

The first humans who settled in Scandinavia more than 10,000 years ago left their DNA behind in ancient chewing gum, masticated lumps made from birch bark pitch. This is shown in a new study conducted at Stockholm University ...

Trees remember heatwaves

An Aussie eucalypt can 'remember' past exposure to extreme heat, which makes the tree and its offspring better able to cope with future heatwaves, according to new research from Macquarie University.

Microscopic membrane could fight gum disease

Periodontitis – an advanced form of gum disease that breaks down tissue and bones housing the teeth – affects more than 70 percent of adults aged 65 and older. Engineers have devised various ways to combat the issue, ...

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