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Health & Medicine

New embryonic stem cells ratted out

Overcoming obstacles, scientists have created stable embryonic stem cells from rats. Researchers hope their method will prove useful as a general recipe for isolating stem cells from other mammals.

Health & Medicine

Hot clock key to fruit fly’s global spread

A temperature-sensitive switch in a fruit fly’s biological clock means some species can survive in a wide range of climates while others are stuck on the equator.

Space

Lopsided universe demands different explanation

Cosmologists analyzing an apparent asymmetry in the pattern of radiation reveal evidence for a new type of field in the early universe.

Health & Medicine

Sense for morphine has gender gap

Female rats have fewer brain receptors that sense morphine, making the drug less effective. The work points to the need for more research on why medicine potency can vary among people.

Math

The Sudoku solution

Mathematicians use Sudoku to understand a mysterious, powerful algorithm.

Health & Medicine

Experimental drug fends off emphysema in mice

Mice exposed to cigarette smoke and then ed the drug and fended of emphysema, suggesting the edible drug might help ex-smokers.

Life

Buzzing bees protect plant leaves

Honeybee air traffic can interrupt caterpillars' relentless munching.

Earth

Warmer oceans would fuel more thunderstorms

Satellite data reveal more thunderheads forming as tropical sea-surface temperatures rise.