News
- Earth
Wretched weather sealed explorer’s fate
Unusually low temperatures hindered Robert Falcon Scott's polar expedition in 1912.
- Earth
Taking a mountain’s measure
A survey of Mount Everest alters its official elevation to 29,035 feet.
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- Earth
Mapping 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.
- Animals
Male bats primp daily for odor display
For the first time, scientists have described the daily routine of male sac-winged bats gathering to freshen the odor pouches on their wings.
- Health & Medicine
Stem cells repair rat spinal cord damage
Using embryonic stem cells from mice, researchers restored some movement in paralyzed rats that had undergone a crippling spinal injury.
- Physics
Time’s arrow may make U-turns in universe
Time may run backwards for isolated chunks of matter in our universe and that reversed state could be probed gently from the forward-going realm without disturbing the time arrow.
- Chemistry
Antibiotics may become harder to resist
Drug designers have developed new tactics to make it harder for bacteria to survive exposure to antibiotics.
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Mom’s eggs execute Dad’s mitochondria
Sperm may tag their own mitochondria for destruction inside the fertilized egg.
- Earth
Smoggy Asian air enters United States
High concentrations of ozone from Asia reach the United States.
- Physics
Computers Crunch Quantum Collisions
Physicists have mathematically described what happens when an electron collides with a hydrogen atom, accomplishing a longstanding goal.
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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.
