Feature
- Math
Generous Players
Game theory is helping to explain how cooperation and other self-sacrificing behaviors fit into natural selection.
- Astronomy
End of the Line for Hubble?
With a space shuttle mission to repair and upgrade the Hubble Space Telescope now canceled, astronomers are pondering how to best use the flying observatory during its final years.
- Materials Science
Diatom Menagerie
Materials scientists are trying to coerce diatoms into making silicon-based microdevices with specific features.
- Health & Medicine
Counting Carbs
Although low-carbohydrate diets can be powerful weight-loss tools, many physicians now conclude they aren't for anyone who isn't under a doctor's watchful eye.
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Dying before Their Time
Genetically engineered mice that get prematurely old give hints to the causes of aging.
- Astronomy
Heavenly Passage
On June 8, the black dot of Venus passed across the face of the sun, the first time it did so in 122 years.
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Comfortably Numb
Scientists are finding the molecular targets of anesthetics.
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Beg Your Indulgence
The Japanese concept of amae, in which one person presumes that another will indulgently grant a special request, may apply to different forms of behavior at different ages, even in Western countries.
- Animals
Thoroughly Modern Migrants
Butterflies and moths are causing scientists to devise a broader definition of migration and this has raised some old questions in new ways.
