News
- Math
Searchers capture a champion megaprime
A participant in the Great Internet Mersenne Prime Search set the record for the largest known prime number, which runs to 4,053,946 decimal digits.
- Tech
Fly lends an ear to microphone design
The unique way some flies localize sound has inspired engineers to design tiny directional microphones for hearing aids and surveillance devices.
By Peter Weiss - Health & Medicine
Surprise! Fat proves a taste sensation
The share of consumed fat that travels into a person's bloodstream depends on whether the person tasted fat to begin with.
By Janet Raloff - Health & Medicine
Delayed surgery aids spinal cord repair
Postponing surgery to repair a severed spinal cord in rats improves the likelihood that the operation will counteract the injury.
By Nathan Seppa - Materials Science
Synthetic molecules mimic bone growth
Researchers have created molecules that assemble into a microscopic structure that mimics bone.
- Animals
Female ducks can double eggs by trickery
Female goldeneye ducks can double their offspring by sneaking eggs into other females' nests before settling down to a nest of their own.
By Susan Milius - Astronomy
X-ray craft sees Venus in whole new light
Astronomers have unveiled the first X-ray image of Venus.
By Ron Cowen - Anthropology
Human evolution put brakes on tooth growth
A new analysis of fossil teeth indicates that the slower pace of dental development observed in people today dates back only about 100,000 years.
By Bruce Bower - Animals
New lizard ties for ‘world’s smallest’
A newly discovered lizard small enough to curl up on a dime ties for the title of the smallest of its kind in the world.
By Susan Milius - Health & Medicine
Low Radiation Hurts Bystander Cells
New research confirms that alpha particles from decaying radon atoms can damage neighboring cells they don't directly hit and suggests a mechanism for this so-called bystander effect.
By Ben Harder -
Beer-flavoring compounds guide insects
The class of compounds that give beer its bitterness does two more sober jobs in Hypericum flowers.
By Susan Milius -
Africanized bees rescue loner trees
Africanized bees pollinate some of the big Brazilian forest trees now stranded in the middle of cleared land away from their native pollinators.
By Susan Milius