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In 2000, researchers thought they found the oldest fossil octopus, which lived over 300 million years ago. But it may just be a half-rotten nautilus.

As NASA's Orion spacecraft slipped behind the farside of the moon, the astronauts captured the crescent of Earth setting over the moon's horizon.

In The Creatures' Guide to Caring, science journalist Elizabeth Preston looks to the animal kingdom to explore what it means to be a good parent.

Experts in echolocation use multiple clicks and echoes to sense objects, offering insight into how the brain builds perception.

The astronauts will have a front-row view of the farside of the moon, including sunlit features, an eclipse and a re-creation of the famous Earthrise.

Cortisol in hair shows sharper differences in long-term stress among Ukraine war refugees than standard questionnaires.

People's minds sometimes wander to their bodily sensations, which may reduce symptoms of depression and ADHD, a new study suggests.

In Chiles v. Salazar, the court ruled that a therapist has First Amendment protections. That could impact how talk therapy is regulated.

Mathematician Richard Elwes surveys googology, the study of enormous numbers, in a new book.

Hundreds of Chinese fossils from the dawn of animal evolution may change how scientists think of this critical period of prehistory.