News
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AnimalsThat special wax lasts after courtship
Sandpipers' special wax for their wings during the breeding season may have less to do with courting a mate and more to do with sitting on eggs.
By Susan Milius -
Health & MedicineStressing out
A gene variant reduces people's response to the stress hormone cortisol, and people with the variant are less likely to have risk factors for heart disease and diabetes.
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ArchaeologyMaya warfare takes 10 steps forward
The discovery of hieroglyphic-covered steps on the side of a Maya pyramid has yielded new information about warfare between two competing city-states around 1,500 years ago.
By Bruce Bower -
Health & MedicineAsthma pressure may shrink airways
Mechanical stress from constricting muscles could cause airway-lining cells to reproduce, eventually thickening the lining and narrowing the air passage.