News
- Paleontology
Woolly mammoths’ last request: Got water?
Woolly mammoths survived on an Alaskan island thousands of years after mainland mammoths went extinct. But they died out when their lakes dried up, thanks to a warming climate and rising sea levels.
- Archaeology
Parasitic worm eggs found on Silk Road latrine artifacts
Microscopic study of latrine finds indicates disease spread along ancient Asian trade route.
- Neuroscience
Gift-giving brain cells are lifeline to injured nerve cells
After an injury, astrocytes give nerve cells a gift of mitochondria, mouse study suggests.
- Life
Human eye spots single photons
Human eyes are sensitive enough to detect individual particles of light.
- Life
Distinctions blur between wolf species
Red and eastern wolves might be gray wolf/coyote blends instead of distinct species
- Earth
New scenario proposed for birth of Pacific Plate
The Pacific tectonic plate formed at the junction of three other plates and above of the remains of a submerged plate, geophysicists propose.
- Life
The nose knows how to fight staph
A bacterium isolated from the nose produces a new antibiotic active against resistant pathogens.
- Chemistry
Vaping’s toxic vapors come mainly from e-liquid solvents
New study homes in on a primary source of toxic vaping compounds: the thermal breakdown of solvents used to dissolve flavorings in e-liquids. And older, dirtier e-cigs generate more of these toxicants, study shows.
- Genetics
Dolly the Sheep’s cloned sisters aging gracefully
Cloning doesn’t cause premature aging in sheep.
- Earth
Ancient air bubbles could revise history of Earth’s oxygen
Pockets of ancient air trapped in rock salt for around 815 million years suggest that oxygen was abundant well before the first animals appear in the fossil record.
- Cosmology
Debate accelerates on universe’s expansion speed
A puzzling mismatch is plaguing two methods for measuring how fast the universe is expanding.
- Earth
How dinosaurs hopped across an ocean
Land bridges may have once allowed dinosaurs and other animals to travel between North America and Europe around 150 million years ago, a researcher proposes.
