In two studies of mice, a molecule called leukotriene helped trigger food-induced anaphylaxis. A drug approved for asthma — zileuton — diminished it.

Alpha Centauri A, four light-years from Earth, may host a gas giant. If confirmed, no Earthlike planets orbit in the star’s habitable zone.

Researchers reconstructed a roughly 2,000-year-old woman’s tattoos, from prowling tigers to a fantastical griffinlike creature.

Excavated implements suggest a Homo species arrived on Sulawesi over 1 million years ago, before a nearby island hosted hobbit ancestors.

Government agencies are rapidly adopting AI, but experts warn the push may outpace privacy safeguards and leave data vulnerable to leaks and attacks.

Golden apple snails can regrow full, functional eyes. Studying their genes may reveal how to repair human eye injuries.

A gene called IBSH1 helped spreading earthmoss thrive at high gravity, hinting at how plants adapted to photosynthesize on land.

The unique architecture of some ball-like plants high in trees in Fiji lets violent ants live peacefully and feed the plant with valuable droppings.

One exercise outperformed walking, resistance training and aerobic exercise in the treatment of sleep disorders such as insomnia.

The superclouds probably produce star-forming clouds of gas, since most nearby stellar nurseries are located within the giants.

The recommended age for starting colorectal cancer screening is now 45. That shift may explain a rise in early cases.

An infinity symbol–shaped galaxy hosts an active supermassive black hole. The growing giant may have come from the aftermath of a galactic smashup.