News
- Health & Medicine
Protective enzyme has a downside: Asthma
The abnormal production of a parasite-fighting enzyme contributes to asthma.
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Watching the biological clock
Biologists now have a way to predict when a woman will start menopause.
- Archaeology
Rat DNA points to Pacific migrations
An analysis of mitochondrial DNA from Pacific rats supports a theory that ancestors of today's Polynesians migrated from Southeast Asia to a string of South Pacific islands in at least two separate dispersals.
- Earth
Warmer climate, decreased rice yield
Agricultural data gathered over a dozen years at a Philippines rice paddy suggest that climate changes brought about by global warming could significantly diminish rice yields.
