NEW ORLEANS — The self-cleaning marvel known as earwax may turn the dust particles it traps into agents of their own disposal. Earwax, secreted in the ear canal, protects ears from building up dunes of debris from particles wafting through the air. The wax creates a sticky particle-trapper inside the canal, explained Zac Zachow January […]

The asteroid strike (or was it the roiling volcanoes?) that triggered dino doomsday 66 million years ago also brought an avian apocalypse. Birds had evolved by then, but only some had what it took to survive. Biologists now generally accept birds as a kind of dinosaur, just as people are a kind of mammal. Much […]

WASHINGTON — Scientists have spotted a quintet of record-breaking blazars. The five gamma-ray blazars — supremely bright galaxies that host supermassive black holes — are the most distant ever spotted, at more than 11.7 billion light-years away. As a gamma-ray blazar’s black hole swallows up matter, bright jets shoot out of the galaxy at close […]

Cone snails are normally stealthy hunters, but they become clumsy and unfocused in water with increased levels of carbon dioxide. Oceans absorb CO2 from the atmosphere. As atmospheric CO2 levels rise, those in the oceans do too, changing the chemistry of the seawater. Cone snails (Conus marmoreus) that spent several weeks in water dosed to […]

WASHINGTON — Scientists usually worry that animal diseases could spill over into humans. But “spillback” of Zika virus into monkeys in South America could be just as dangerous. In areas where Zika infections are prevalent among humans and mosquitoes are abundant, the virus may be transmitted to wild primates, disease ecologist Barbara Han said February […]

Not one but two rising plumes of magma from deep within the Earth fueled the titanic volcanic eruptions that marked the final days of the dinosaurs, new research suggests. The Deccan eruptions in what is now India, some scientists argue, helped wipe out most animal and plant species around 66 million years ago, including all […]

Deep beneath coral rubble in reefs off the coast of Guam, there lives a pale, black-eyed crab whose true taxonomic character has long been unknown. In 2001, amateur researcher Harry Conley discovered the translucent crab burrowing among reef rocks. Eventually, two specimens — each several millimeters long — came to the lab of biologist Peter […]

BOSTON — A new imaging technique takes advantage of DNA’s natural ability to “blink” in response to stimulating light. The new approach will allow unprecedented views of genetic material and other cellular players. It’s the first method to resolve features smaller than 10 nanometers in unmodified, live cells, biomedical engineer Vadim Backman said February 17 […]

A maternal dynasty ruled one of the earliest and most mysterious civilizations in the Americas, centered in New Mexico’s Chaco Canyon, for more than three centuries, researchers say. DNA extracted from the bones of individuals buried inside a massive Chaco stone pueblo or great house, along with new radiocarbon dates for interred bones, indicate that […]

Fitbit-style tracking of two wild African elephants suggests their species could break sleep records for mammals. The elephants get by just fine on about two hours of sleep a day. Much of that shut-eye comes while standing up — the animals sleep lying down only once every three or four days, new data show. Most […]