News
- 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.
- Life
Researchers distinguish two different types of blood stem cells
Working in mice, scientists find that red and white blood cells arise from different progenitors.
- Physics
Aluminum superatoms may split water
Metal clusters could create hydrogen for fuel, simulations suggest.
- Health & Medicine
Old drug may be first choice for childhood petit mal epilepsy
Three-way trial shows ethosuximide edging out two newer choices.
- Earth
Earth knocked for a loop
Chile’s February 27 temblor, tectonically linked to another giant quake 50 years ago, sped up the Earth’s rotation and tipped the planet’s axis.
- Chemistry
Plasticizers kept from leaching out
‘Chemicals of concern’ may be made safer in new materials.
- Space
Lopsided stellar disks help black holes guzzle gas
Theorists have found a new recipe for feeding the supermassive centers of galaxies.
- Life
Rise of female weaponry driven by poop fights
Motherly fights for excrement in one species of dung beetle have favored the evolution of a special female horn.
- Health & Medicine
Coffee not linked to heart arrhythmia
A large survey of insured people finds no extra hospitalizations in java swillers.
- Paleontology
Ancient DNA suggests polar bears evolved recently
A study of a rare Norwegian fossil narrows down when polar bears evolved and finds they are closely related to modern-day brown bears in Alaska.
- Archaeology
Stone Age engraving traditions appear on ostrich eggshells
Fragments indicate symbolic communication on 60,000-year-old water containers.
- Humans
Titanic study: It takes time to do the right thing
Comparing the Titanic and Lusitania disasters suggests that people in a crisis are more likely to maintain social norms if they have longer to react.
