News
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Tapeworms tell tales of deeper human past
A new analysis of tapeworm history suggests that people have been wrong about where we picked up pests: It was not domestication of cattle and pigs but increased meat eating in Africa.
- Health & Medicine
Immune cells rush to gut in food allergy
In mice, allergic reactions to food coincide with an accumulation of white blood cells called eosinophils in the small intestine.
- Tech
Optical biopsy hunts would-be cancers
A new optical tool allows physicians to scout for precancerous tissue by analyzing the fluorescent responses of cells when light is shone on them.
- Astronomy
A comet’s odd orbit hints at hidden planet
Far beyond the solar system's nine known planets, a body as massive as Mars may once have been part of our planetary system, and it might still be there.
