Authorities have killed several lab monkeys that escaped from an overturned truck in Mississippi. The rhesus macaques were ...

The major resemblance between teeth and bones is what they're made of: hard tissue composed of minerals, such as calcium, ...

Researchers have developed a chemical structure for an artificial muscle that can lift up to 4,000 times its weight, and they ...

Researchers have unearthed two dinosaur "mummies" in the badlands of Wyoming, confirming duck-billed dinosaurs had hooves, ...

Earth's systems are nearing tipping points that could plunge the planet into a "hothouse" regime — but there's still time to prevent that from happening, scientists say.