Nuclear weapons haven’t been tested in the United States since 1992. Find out why, and what could happen if the hiatus ends.

Results show that players’ choices echo predator-prey patterns seen in wildlife, though scientists stress the limits of the ...

The sun’s outer atmosphere resembles a pufferfish.

When infected by a fungal disease, ant pupae actively emit a chemical cue that prompts workers to get rid of them for the ...

The year's top paleontological wonders ranged from a 540-million-year-old penis worm to a decades-old rodent impression.

Longest lightning, the first AI-generated genomes and biggest black hole smashup were among this year’s top science ...

In the classic American folktale The Little Engine That Could, a small blue locomotive laboriously chugs up a hill hauling ...

Wild axolotls are facing extinction. That’s the bad news. But take heart: Cutie-pie axolotls bred in captivity may be able to ...

New footage shows orcas and dolphins coordinating hunts, hinting at interspecies teamwork to track and catch salmon off ...

The James Webb Space Telescope detected an atmosphere on a lava-covered exoplanet, evidence that small planets close to stars ...

Are we reading our dog’s moods right? Does TV really comfort them when we’re away? These pet stories were catnip to us this ...

Advances delivered what may feel like medical miracles, including the first bladder transplant, a lifesaving personalized ...