News
- Archaeology
Maize domestication grows older in Mexico
Maize cultivation existed in southern Mexico at least 6,300 years ago, according to a recent radiocarbon analysis of two maize cobs unearthed in a cave nearly 40 years ago.
- Health & Medicine
Common additive thwarts malaria parasite
Triclosan--a drug used as an antimicrobial agent in toothpaste, deodorant, and other products--kills rodent malaria parasites in mice and human malaria parasites in test-tube studies.
- Physics
Muon orbits may defy main physics theory
A tiny discrepancy from theory in a newly remeasured magnetic trait of a subatomic particle, the muon, may represent a first crack in the 30-year-old prevailing standard model of particle physics.
- Materials Science
Scientists develop self-healing composites
Researchers have developed a composite material that has the ability to repair small cracks within itself, a characteristic that could be used to extend the reliability and service life of electronic and aerospace components.
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- Earth
Siberian snow has long-range effects
The strength of the winter weather feature called the Siberian high is linked to the amount of early-season snow cover in its namesake region.
- Earth
Lack of oxygen locks up peat’s carbon
The inactivity of a single enzyme in peat due to the lack of oxygen may be the only thing preventing massive releases of carbon dioxide from the peatlands.
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Inbred cattle don’t look bad at all
A herd of feral cattle that hasn't had new blood for at least 300 years seems to have avoided the genetic risks of inbreeding.
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Genetic search for an equine Eve fails
Genetic analysis suggests an unusual history for modern horses: lots of independent domestications instead of the usual few.
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Cloned gaur born healthy, then dies
The first cloned gaur, a rare, Asian oxlike creature, died when only a few days old but proved the technique worked.
- Health & Medicine
Teeth grinding linked to sleep apnea
Rhythmic grinding of teeth during sleep occurs at least once a week in as many as 8.2 percent of people.
- Health & Medicine
Lyme vaccine works in a curious way
Antibodies formed in response to the vaccine against Lyme disease kill the bacteria that cause it while they are still in the deer tick that spreads it.
