Country-size array of radio antennas could trace ultra–high-energy particles back to supernovae and black holes

New footage reveals spectral bats “hugging,” playing, and bringing food to their young

Shrinking staff and other handicaps threaten enforcement of federal law that protects research animals

Chinook in the Yukon River appear to be particularly vulnerable to a common parasite—and warming waters may be abetting the infection

Many topics on Bhattacharya’s list are familiar, but order to re-evaluate grants draws concerns

Possible lungfish tracks could push back animal migration onto land by 10 million years

In simulations, AI-generated users of stripped-down social media without content algorithms still split into polarized echo chambers

The mysterious branch of life of known as archaea harbor unique bacteria-fighting compounds

New footage provides rare insight into the daring migration of an enigmatic fish

Demo showcases new AI-powered tool of potential use in quantum computers

One technique was practiced significantly earlier than some researchers believe

Researchers isolated signals from a brain implant so people with movement disorders could voice thoughts without trying to speak

Drug and chemical safety can be assessed with AI and organ chips, but some scientists say it’s too soon to forgo animal methods entirely

Dispute over elusive Majorana particles claimed in Science highlights controversial approach to robust quantum chips

The cells could be a new source of tumor DNA for liquid biopsies

Scientists say the teeth belonged to a type of Australopithecus, a relative of Lucy’s species, that coexisted with our genus, Homo

Evidence from a 500-year-old khipu suggests commoners helped craft the Inca’s intricate knotted records

Overlooked emissions from exotic positronium atoms could improve medical scanners

Ruling comes as government seeks settlement with UCLA on larger set of suspended grants

Making use of an obscure physics effect to fly, devices could probe the upper atmosphere and explore Mars

Survey of five Australian avians finds numerous discordant individuals, including a genetically male bird that had laid an egg

Despite bearing remarkably far-flung genetic origins, a girl and young man were buried just like their peers

Worried about regional security, bloc pushes forward on controversial “dual-use” approach

Unlike people, these nest-building insects pull harder in teams