News
- Animals
Butterfly ears suggest a bat influence
Researchers have found the first bat-detecting ear in a butterfly and suggest that the threat of bats triggered the evolution of some moths into butterflies.
- Astronomy
Hubble Space Telescope: Eye wide open
Two months after the failure of a fourth gyroscope shut it down, and 3 weeks after a shuttle crew paid it a service call, the Hubble Space Telescope is back in business.
- Earth
As globe warms, atmosphere keeps its cool
Scientists confirm a confusing discrepancy between temperatures at Earth's surface and in its atmosphere.
- Health & Medicine
Oxygen limits infections from surgery
Giving patients extra oxygen during and shortly after colorectal surgery halves the incidence of infection.
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Popular Boys Show Their Tough Side
Some highly aggressive boys may become popular figures in their elementary school classes and wield much influence over classroom discipline.
- Animals
Oops. Woodpecker raps were actually gunshots
The knock-knock noises recorded last winter that raised hopes for rediscovering the long-lost ivory-billed woodpecker in Louisiana turn out to have been gunshots instead of bird noises.
- Tech
Making a Little Impression: New chip-making method may mold the industry
A simple mechanical means of embossing silicon may offer an alternative to conventional chip-making methods.
- Health & Medicine
Stem Cell Gain: Bone marrow cells seem to have what it takes
Tests show that a rodent bone marrow cell similar to one found in people acts as a multipurpose stem cell, much as embryonic stem cells do.
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Hostile Intent: Abused kids face up to angry expressions
Physical abuse at home apparently tunes a school-age child's perceptual system to pick up signs of anger in others' facial expressions.
- Astronomy
Planetary System in the Making? Stellar eclipse hints at planet-forming debris
Astronomers reported the first evidence that a young star is periodically eclipsed by a stream of debris, possibly an orbiting belt of asteroids held in place by a massive, unseen planet.
- Chemistry
Molecule Sorting: Antibody membrane lends a hand
A new membrane may make it easier to separate mixtures of drug molecules that exist in mirror-image versions into their two components.
- Health & Medicine
Enough Isn’t Enough: An epidemic of vitamin D deficiency
Many U.S. women of childbearing age, particularly those of African descent, lack sufficient vitamin D even though they consume the recommended amount.
