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- Humans
Stone Age tools go south
Diamond-mining pits have yielded stone artifacts old enough to suggest that hand axe production started 1.6 million years ago in southern Africa, not just in eastern Africa.
- Health & Medicine
Fewer dopamine receptors makes for risky business
Brain-scanning study in people sees link between personality, dopamine system.
- Health & Medicine
Disturbed sleep tied to Parkinson’s risk
People who have a disorder that causes them to thrash and kick during sleep face a high risk of developing Parkinson’s disease or other neurodegenerative disorders.
