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Neandertal Hunters Get to the Point
A stone spear point stuck in a fossilized creature's neck bone indicates
that Neandertals were practiced hunters.
Malaria disrupts the immune system
The single-celled organism that causes malaria also disrupts the immune
system, a laboratory study shows.
Outta site! A crafty peek at the
sun's back
A spacecraft has taken the first peek at activity on the back side of
the sun, a feat that may ultimately lead to earlier warnings of solar
storms headed to Earth.
Amino acid puts the muscle in mussel glue
New information about the proteins that mussels use to anchor themselves
underwater could lead to glues for biomedical and industrial applications.
If Mom chooses Dad, more ducklings survive
Female mallards allowed to mate with the drake they desire had more
of their offspring survive than did ducks with males chosen for them.
Bt-treated crops may induce allergies
A relatively nontoxic bacterium, used as a pesticide to protect crops,
may provoke allergies in people who handle treated produce.
DNA crystals are a bacterium's best friend
To protect DNA from damage during periods of starvation, bacteria may
form crystals that include the genetic material.
A pitch for decoding frequency more simply
Researchers are proposing a new model to describe how the brain converts
a sound's frequency to a perceived pitch.
Stop-and-Go Science
By better understanding traffic flow, researchers hope to keep
down highway congestion
Researchers are using controversial new models and computer simulations
to study roadway congestion and try to control traffic.
The Secret Lives of Squirrel Monkeys
Social behavior takes surprising turns among these tiny primates
Field observations of South American squirrel monkeys have yielded a
surprising range of behaviors, raising questions about captive-animal
studies and current theories of primate social evolution.
Astronomy
Mars in 3-D
Bouncing a laser beam off the Red Planet, a spacecraft has created a
three-dimensional map of the Martian surface that is more detailed than
3-D maps for some parts of Earth.
Biology
Recipe found for orchid aphrodisiac
Researchers have at last figured out the recipe for one of nature's
sexiest perfumes, the scent that drives male bees to try to mate with
an Ophrys orchid.
How moths tell if a yucca's a virgin
Female yucca moths appear to leave a scent mark on flowers telling other
females not to overburden the bloom with eggs.
Earth Science
Reading the leaves for climate clues
Ancient birch leaves raise questions about prehistoric concentrations
of carbon dioxide.
La Niña stirs weather extremes
A Pacific chill has fostered the current Mid-Atlantic drought and will
pump up Atlantic tropical storms this year.
Science & Society
Safe tobacco? Nice try, but no cigar
Regular cigar smokers face not only twice a nonsmoker's chance of developing
some cancers but also a 30 percent higher risk of coronary heart disease.
EMFs—doubts linger over possible risks
Though the data linking electromagnetic fields to human disease are
weak, a federal review concluded that such fields cannot be considered
entirely safe.
