Uncategorized
- 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.
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I found this article enlightening. However, it should be noted that similar effects can be obtained at slower speeds using a towel in a locker room. Alan UnellLa Crescenta, Calif. The story ended by mentioning that researchers would be continuing to work on a computer model. Here’s some additional information you may wish to pass […]
- Physics
Loud 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.
- Health & Medicine
Eat Broccoli, Beat Bacteria: Plant compound kills microbe behind ulcers and a cancer
A chemical abundant in broccoli and certain other vegetables kills ulcer-causing Helicobacter pylori bacteria in the laboratory and inhibits stomach cancer in mice.
- Animals
Sniff . . . Pow! Wasps use chemicals to start ant brawls
Wasps sneak around in ant colonies thanks to chemicals that send the ants into a distracting frenzy of fighting among themselves.
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Mussel Muzzled: Bacterial toxin may control pest
A toxin made by bacteria could help stop the spread of zebra mussels.
