Microblazars — a miniature version of blazars — may be responsible for mysterious ultra-high-energy particles.

One theory points to a long-awaited supersymmetric particle called a ‘higgsino.’ But that idea has some issues.

A dead star’s wreckage may be the birthplace of a new planet. The existence of second-generation planets was predicted ...

Scientists graded every river and stream in the contiguous United States, flagging specific repairs each one needs to support ...

A waterborne pathogen flourishes while toads shelter underground. The finding may help conservationists rethink how to ...

A female humpback whale may have spent days with her stillborn calf. This rare sighting may suggest that baleen whales ...

Uneven supernova explosions may explain the unusual mix of elements in Milky Way stars once thought to be evidence of ...

Scientists testing potential treatments for sleep apnea made an unexpected discovery. How quickly people react may depend on ...

The 10th century treatment called Bald’s eyesalve attacks microbes in multiple ways. Molecule mixtures from it may inspire ...

Naegleria amoebas’ exploration skills and crawling behaviors could help explain how the brain-eating variety travel into ...

The first time I was in Punta San Juan, the desert was flooded with birds. It was 2012, and I was making a short documentary film about the cormorants, pelicans and penguins that made this arid ...

Editor in chief Nancy Shute dives into growing research efforts to re-engineer the body to improve how it interacts with prosthetic devices.