News
- Archaeology
Maya 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.
- Health & Medicine
Asthma 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.
- Chemistry
Now, nylon comes in killer colors
Chemists are improving antibacterial fabrics by treating them with compounds that prolong their killing power and add color.
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The planet that isn’t
An astronomer has formally retracted her claim that she and her colleagues had likely taken the first image of a planet outside the solar system.
