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Indigenous Australians use ochre to add colour and detail to items such as this shield at the South Australian Museum. Image courtesy of South Australian Museum

When bacteria tell a story: tracing Indigenous Australian ochre sources via microbial ‘fingerprinting’

Ochre is more than just paint - it tells stories of culture and trade in Indigenous Australians. Using museum artefacts plus science can track ochre sources and untangle a lost history.
As genes are favored or phased out, human evolution continues. ktsdesign/Shutterstock.com

Evolutionary geneticists spot natural selection happening now in people

Comparing genomes of more than 200,000 people, researchers identified genetic variants that are less common in older people, suggesting natural selection continues to weed out disadvantageous traits.

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