News
- Life
Chicken cells have strong sense of sexual identity
In birds, hormones may not be the last word in determining males and females.
- Life
Evolutionary genetic relationships coming into focus
Researchers have filled in about 40 percent of the tree of life for mammals and birds, but other vertebrates lag behind.
- Health & Medicine
Cocktails ward off the bulge
A large study has found that middle-aged women who drink moderately gain less weight over the years compared to their teetotaling peers.
- Climate
Ancient Norse colonies hit bad climate times
Temperatures in Iceland plummeted soon after settlers arrived, a new chemical analysis suggests.
- Life
Chameleon tongues snappy even when cold
Collagen gives the creatures a bug-catching advantage in chilly conditions.
- Life
Boys and girls differ in genetic response to what mom eats
Expectant mothers’ diets may influence gene activity differently in the placentas that feed sons and daughters, a new mouse study reveals.
- Health & Medicine
Gene linked to pain perception
A common genetic variant that appears to increase sensitivity could lead to the development of better medications.
- Earth
Country ants make it big in the city
Odorous house ants act like invading aliens when they discover urban living.
- Life
Mature females key to beluga sturgeon survival
Hatchery fish are unlikely to restore caviar-producing fish populations, a new assessment finds.
- Psychology
Alcohol distills aggression in large men
A new study suggests that the ‘big, mean drunk guy’ stereotype contains some truth.
- Space
Geophysicists push age of Earth’s magnetic field back 250 million years
South African rocks suggest that the earliest stages of life on Earth were protected from harmful solar radiation.
- Earth
Arctic seafloor a big source of methane
Measurements show that Arctic undersea methane deposits, previously thought to be sealed by permafrost, are leaking into the atmosphere.
