News
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EarthIcequake swarms portend some avalanches
By keeping an ear to the ice, scientists can predict impending glacial crack-ups two weeks in advance.
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LifeJust warm enough
Mammals may have evolved a characteristic body temperature to avoid fungal infections without burning too hot.
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LifeWealth and ambition
A week in fancier digs inspires rats to seek richer rewards.
By Susan Milius -
SpaceNewfound planet stirs old debate
The discoverers of a fourth body orbiting a nearby star say its origins pose a challenge to existing theory, but some disagree.
By Ron Cowen -
PhysicsNuclear split surprises
Physicists spot a new and unexpected type of lopsided fission in the element mercury.