Many medieval castles were formidable stone fortifications. Live Science takes a look at six that were never conquered.

Watch NASA's Curiosity rover 'struggle' to remove a rock that got stuck on its robotic arm for nearly a week New footage ...

A "foundational" study found that the brains of children with ADHD matured later, but that finding was likely a mirage tied to issues with how the children were followed over time.

Dead seal pups on a Canadian island have been found with mysterious spiral-shaped injuries for years. The wounds were thought ...

Neptune has a complicated life story, and its moon Nereid might be the only one left standing from the planet’s ...

Technology Artificial Intelligence Can AI really simulate human thinking? Research casts doubt on an influential study, suggesting an advanced model was just really good at memorizing patterns. A ...

The newly described mosasaur Tylosaurus rex spanned up to 43 feet (13 meters) long and may have been one of the fiercest ...

The new 'mecha' robot, which weighs over 1,000 pounds and stands nearly 10 foot tall, is designed for urban mobility.

Researchers have found that introducing human-made data into AI training can help to prevent AI model collapse.

Trove of fossils discovered in Canada sheds light on "when life first became large, complex and unmistakenly animal." ...

Three Gorges Pilot, a 16-megawatt floating offshore wind turbine, marks a major step for deep-water renewable energy and the ...

In all, 75% of Earth's species went extinct, including the nonavian dinosaurs. So how did some animals ‪—‬ including species ...