News
- Materials Science
Clever Coating: New polymer may prolong life of medical implants
Coating medical implants such as glucose sensors and coronary stents with copper-doped polymers could dramatically extend the devices' functioning.
- Earth
An Ounce of Pollution: Particles’ harm varies by person, region, season
A gram of small, air-polluting particles has deadlier effects in certain seasons and regions of the country than in others, and particulate pollutants may disrupt heart function most in people who already have cardiovascular problems.
- Astronomy
Alien Light: Extrasolar planets are detected in new way
Two teams of scientists report that they have for the first time directly detected the glow of planets that circle sunlike stars hundreds of light-years from Earth.
- Paleontology
Old Softy: Tyrannosaurus fossil yields flexible tissue
Scientists analyzing fragments of a Tyrannosaurus rex's leg bone have recovered soft, pliable material, including structures that apparently are cells and blood vessels.
- Health & Medicine
Plants take bite out of deadly snake venoms
A Nigerian pharmacologist has found in local plants a potential antidote to some of the world's most deadly snake venoms.
- Health & Medicine
Flame retardants spark new concern
Breakdown products in brominated flame retardants, traces of which circulate in the blood of most people, may perturb the normal production of reproductive hormones, a new test-tube study suggests.
- Earth
Paint additive hammers coral
A pesticidal additive in the paint applied to ship hulls may be contributing to the worldwide decline of corals.
- Animals
Ant larvae sway to say, ‘Feed me!’
The most detailed study yet of body language of ant larvae translates a swaying motion as begging for food and a chance at a better future.
- Planetary Science
Jupiter as mirror for the sun’s X rays
X rays emanating from Jupiter's midriff actually originate on the sun, new observations show.
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College may endow memory to old brains
College-educated older adults recruit new brain areas to counteract some of the memory loss that occurs with aging, a new brain-imaging study suggests.
- Health & Medicine
New protease inhibitor looks promising
An antiretroviral drug under development may work in patients for whom existing drugs fall short.
- Physics
Light’s Hidden Holdup: Reflected laser beams loiter a little
Using an ultrashort pulse laser, physicists have measured a minuscule time delay that affects light reflecting off many surfaces.
