News
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Tests hint bird tails are misunderstood
A test of starling's tails in a wind tunnel suggests that the standard practice of extrapolating bird tail aerodynamics from delta-wing aircraft may be a mistake.
- Health & Medicine
Radiation harms blood vessels before gut
The side-effects of radiation therapy may result from initial damage to blood vessels.
- Health & Medicine
Sticky platelets boost blood clots
Tests for genetic variations of a key protein on platelets, the cell-like blood components that form clots, and their propensity to clump could help physicians determine optimal medication for heart disease patients.
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Vitamin A calibrates a heart clock, 24-7
Scientists have discovered a molecular clock that keeps the circulatory system in sync with the rest of the body, and they show it's regulated by vitamin A.
