News
- Anthropology
Clovis people may have hunted elephant-like prey, not just mammoths
The ancient American Clovis culture started out hunting elephant-like animals well south of New World entry points, finds in Mexico suggest.
- Health & Medicine
HIV reemerges in ‘cured’ child
The discovery spotlights limits in detecting the clandestine germ and raises questions about whether HIV can ever truly be cured.
- Oceans
Saharan dust explains Bahamas’ paradoxical existence
Windswept dust from the Sahara Desert may fertilize bacteria that built the Bahamas.
- Cosmology
Lab version of early universe fails to solve lithium problem
An experiment that imitated conditions from just after the Big Bang failed to explain why observed amounts of lithium don’t match those expected from theory.
- Environment
Decline in birds linked to common insecticide
In addition to harming bee populations, neonicotinoid insecticides may also be detrimental to bug-eating birds.
- Life
Fiber optics in mammals’ eyes separate colors
Specialized cells in the retina separate different wavelengths of light to enable sharp vision during the day without harming night vision.
- Life
Gecko adhesion takes electric turn
Challenging a favored theory, measurements suggest that electrostatic interactions make gecko feet supersticky.
- Environment
Microplastics lodge in crab gills and guts
Crabs can absorb microplastic particles through their gills and by eating polluted mussels.
- Life
Dramatic retraction adds to questions about stem cell research
Researchers who reported an easy method for making stem cells admit mistakes mar their work, and have retracted their papers from Nature.
- Astronomy
Rare planet circles just one of a pair of stars
A newly discovered exoplanet orbits one star in a binary pair and shows that planets can form even with a second sun nearby.
- Earth
Oklahoma earthquakes triggered by wastewater injection
Dumping wastewater from the oil and gas industry into disposal wells may have set off swarm of earthquakes in Oklahoma.
- Astronomy
Exoplanets once trumpeted as life-friendly may not exist
Two exoplanets considered among the most promising for hosting life may not exist, a new study suggests.
