Study provides evidence that our relatives have a "theory of mind."

It's unclear why river dolphins do this, but it might serve some kind of social function.

New 3D study shows meltwater driving fissures deeper into the glacial ice.

The political winds have shifted in Washington, but the FAA hasn't yet changed its tune on Starship.

There's a difference between knowing a word and knowing a concept.

There may be several hundred thousand fake scientific papers in circulation.

Peruvian mummy tattoos, the wobbly physics of spears and darts, quantum "cat states," and more.

Clues as to how building blocks of life on Earth may have been seeded.

Patches of stem-cell-derived heart muscle improve damaged hearts.

Device can grab like a hand, crawl across the floor, or jump high, just by pulling on a simple muscle.