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.

Modern genetic evidence suggests that statue builders on islands such as Rapa Nui, also known as Easter Island, had a shared ...

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

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

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

Avian flu, overfishing, and a super El Niño have decimated Peru’s largest colony of Humboldt penguins. Scientists are holding ...

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

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

Season 2 follows people losing their ability to speak — and the AI and brain implants helping them find their voices again.

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