Uncategorized
- Anthropology
Gene test probes Neandertal origins
A new DNA study supports the theory that Neandertals didn't contribute to the evolution of modern humans.
- Animals
He and she cooperate on anti-aphrodisiacs
Scientists have for the first time identified a chemical that serves as a butterfly anti-aphrodisiac.
- Chemistry
Lakes reveal low phosphate concentrations
Researchers using a new technique have found that previous measurements of phosphate, an important nutrient in lake ecosystems, have grossly overestimated its concentration.
-
Mice can thank a hormone for the memories
Oxytocin, a hormone previously implicated in mammalian sexual and maternal behavior, may play a role in social recognition in mice.
- Health & Medicine
Stress-prone? Altering the diet may help
Tailoring a diet to fuel the brain with the precursor of a mood-enhancing chemical may help vulnerable individuals cope with stress.
- Astronomy
Stars’ wobbles reveal six more planets
Swiss astronomers have found indirect evidence of six additional planets that lie outside the solar system, bringing the tally to more than 40.
- Astronomy
Gamma-ray craft plunges into Pacific
As planned, NASA's Compton Gamma Ray Observatory, which had detected some of the highest-energy radiation in the universe for 9 years, crashed into the Pacific Ocean on June 4.
-
Checking up on abuse memories
An unusual trove of evidence in a criminal case supports the accuracy of recall of childhood sexual abuse.
-
Energy-efficient brains
Successful problem solving depends on a brain that efficiently lessens its workload rather than laboring harder.
-
Why is that wasp helping?
Researchers have found nests of a social insect with helpers that are neither close kin nor slaves.
-
Weevils pick on someone their own size
A horned weevil can't pick a real fight with a male too big for him because the bigger one can't get a good grip.
-
Trilobites might have invented farming
A close look at fossils raises the possibility that a type of trilobite farmed bacteria.
