News
- Physics
Putting a new spin on silicon
Embedding ions of manganese in silicon imparts a magnetic field to the otherwise nonmagnetic semiconductor.
- Earth
Of X rays, viruses, and cooked meat
The National Toxicology Program updated its list of human carcinogens to include X rays and several viruses and added lead and some compounds formed in overcooked meats to its list of probable human carcinogens.
- Agriculture
Illegal cigarettes pack toxic punch
Tobacco used in counterfeit cigarettes is apparently grown using metal-laced fertilizers, making the fake products even more harmful than the real things.
- Astronomy
Proton storm erupts from the sun
A storm of high-speed protons, triggered by a Jan. 20 solar eruption, bombarded spacecraft and was the most energetic such squall recorded in 15 years.
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Anxieties stoke bipolar unrest
Insomnia and other serious sleep difficulties plague many people with bipolar disorder, even after medications have eased their extreme mood swings.
- Humans
NIH tightens its ethics rules
The National Institutes of Health issued new ethics rules to keep its employees from engaging in potentially questionable relationships with organizations that might have a financial interest in NIH activities or policies.
- Tech
Outsmarting the Electronic Gatekeeper: Code breakers beat security scheme of car locks, gas pumps
Because designers flouted a well-known rule for making cryptographic systems impenetrable, automakers and other businesses have embraced a wireless security technology that's vulnerable to attack.
- Animals
Bad Breath: Insects zip air holes to cut oxygen risks
The need to avoid overdosing on oxygen may drive certain insects to shut down their breathing holes periodically.
- Materials Science
Petrified wood: Quick and easy
Materials scientists have turned wood into stone in a matter of days, mimicking a natural process that takes millions of years.
- Health & Medicine
There’s the Rub: Football abrasions can lead to nasty infections
U.S. football players who get scrapes and cuts from playing on artificial turf sometimes develop bacterial infections that are resistant to some antibiotics.
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A Bug’s Life: E. coli can’t escape old age
Bacteria that divide symmetrically, once thought to be functionally immortal, may age and die just like other organisms do.
- Health & Medicine
When Ebola Looms: Human outbreaks follow animal infections
A network of organizations in an African region prone to Ebola epidemics has identified the virus in wild-animal remains prior to two recent human outbreaks, suggesting that animal carcasses may provide timely clues that could prevent the disease from spreading to people.
