The results suggest brain cell activity could play a surprising role in the body’s metabolism. Ripples of nerve cell activity that lock in memories may have an unexpected job outside of the brain: Dropping blood sugar levels in the body. Just after a burst of ripples in a rat’s hippocampus,
A year and a half of pandemic has left many children struggling academically and emotionally. At the start of a school year, kids usually show up with oversized backpacks stocked with fresh pencils, crisp notebooks and snacks. This back-to-school season, many children will carry extra baggage. Eighteen months of an
Spiders from at least 11 different families feed on serpents many times their size. A spider’s typical dinner menu might include insects, worms or even small lizards and frogs. But some arachnids have more adventurous tastes — they can eat snakes up to 30 times their size. Take the Australian
A widespread return to COVID-19 restrictions could be on the horizon The coronavirus’s delta variant is different from earlier strains of the virus in worrying ways, health officials are discovering. And those differences may mean a return to some of the restrictions that vaccinated people thought were in the past.
A new study is a take on the adage, “The enemy of my enemy is my friend.” When parasitic wasps come calling, some caterpillars have a surprising ally: a viral infection. Insects called parasitoid wasps lay their eggs inside young moth larvae, turning the caterpillars into unwitting, destined-to-die incubators for
The book grapples with the ethical dilemmas of saving Earth’s animals. On the Arctic Ocean’s fringe, polar bears stand on ice thinning from human-caused climate change. Without thick ice from which to powerfully pounce on seals, many of these symbols of the wild north can’t eat. Should we feed polar
Fewer of the great apes could be left in the wild than previously thought. Climate change is interfering with how researchers count bonobos, possibly leading to gross overestimates of the endangered apes, a new study suggests. Like other great apes, bonobos build elevated nests out of tree branches and foliage
A surprising cellular defensive strategy could inspire new antibiotics. When faced with bacterial invaders, some human cells dispense a surprising substance: soap. These cells, which aren’t part of the immune system, unleash a detergent-like protein that dissolves chunks of the inner membranes of bacteria, killing the infiltrators, researchers report in