News
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EarthMost oil enters sea from nonaccidents
Nearly all of the oil entering the marine environment traces not to accidents but to natural seeps and human activities where releases are intentional.
By Janet Raloff -
EarthMapping the Frozen Sky: Study looks at clouds from both sides now
By combining simultaneous observations from satellites and ground-based instruments, scientists can generate a three-dimensional map of the size and distribution of ice particles in a cirrus cloud.
By Sid Perkins -
Snooze Power: Midday nap may awaken learning potential
A brief daytime nap may block or even reverse learning declines that occur during extended practice of a perceptual task.
By Bruce Bower -
PhysicsLoud Loop: New explanation of whip-snapping unfurls
The wake of a loop zooming along a whip may silence the faster-moving tip so the loop actually causes the whip's loud bang.