News
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Tech
Optics oddity challenges microchip makers
An obscure optical effect called instrinsic birefringence has suddenly appeared as a threat to technology for making denser, faster microchips.
By Peter Weiss -
Earth
Atlantic coast may be in for a pounding
The above-average number and strength of hurricanes in the North Atlantic during the past 6 years may signal the beginning of a threatening weather trend for the United States, the Caribbean, and Central America.
By Sid Perkins -
Obscure brain chemicals draw new attention
Long-dismissed brain chemicals called trace amines have receptors on human cells and may play a role in depression and schizophrenia.
By John Travis -
Materials Science
Environment’s stuck with nonstick coatings
Some nonstick coatings such as Teflon break down at high temperatures into undesirable compounds that persist in the environment.
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Health & Medicine
Ebola May Enter Cell via Folate Gate
A cell-surface molecule that normally binds to folate might be targeted by Ebola and Marburg viruses as their entry point to people's cells.
By Nathan Seppa -
Health & Medicine
Reptilian drug may help treat diabetes
The synthetic version of exendin-4, a compound in gila monster venom, helps insulin injections control blood sugar in people with type I, or juvenile-onset, diabetes.
By Nathan Seppa -
Health & Medicine
Thinking blurs when blood sugar strays
Blood sugar concentrations that are too high or too low can impair thinking and, in the case of low blood sugar, driving ability.
By Nathan Seppa -
Shut up! A thunderstorm’s on the way
The narrow-leafed gentian, a mountain blossom, is the first flower shown to close when a thunderstorm apporaches.
By Susan Milius -
A bad month for condors
Two California condors in the wild—a hatching and a just-released juvenile—died the same week, as a third went missing.
By Janet Raloff -
Astronomy
A comet continues to crumble
Ever since astronomers first spied a comet 6 months ago and officially dubbed it C/2001 A2, the icy body has been breaking apart.
By Ron Cowen -
Astronomy
A new giant in the Kuiper belt
An icy body in the Kuiper belt, a reservoir of comets in the solar system beyond Neptune, is a record setter for the belt and bigger than Pluto's moon Charon.
By Ron Cowen -
Tests hint bird tails are misunderstood
A test of starling's tails in a wind tunnel suggests that the standard practice of extrapolating bird tail aerodynamics from delta-wing aircraft may be a mistake.
By Susan Milius