News
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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.
- 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.
- Health & Medicine
Revised Immunity: Drug slows diabetes in young patients
A drug fashioned from a mouse antibody has halted the progression of diabetes in children and young adults who are newly diagnosed with the disease.
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Med use widens in kids with ADHD
Data from a medical center in Washington state indicate that a substantial minority of children who have attention-deficit hyperactivity disorder receive prescriptions not only for stimulants but also for additional psychoactive drugs intended to treat other mental conditions.
- Animals
Walking sticks mimic two leafy looks and split their species
A species of walking stick may be evolving into two species by adapting to different environments.
- Physics
Atom laser gets a full tank
A method to refill Bose-Einstein condensates—ultracold clouds of atoms all in the same quantum state—may soon make possible the first atom lasers that can shoot a stream of condensate atoms indefinitely.
