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Life needs nutrients like nitrogen and phosphorus. But without the right balance of oxygen, these elements get locked away in planets' cores.

The wood-feeding cockroach's cannibalistic love bites lead to a lasting bond. Afterward, the pair prefer each other over all other roaches.

Lucid dreamers who heard puzzle-linked soundtracks while sleeping were more likely to solve those unsolved problems the next day.

MRI scans of over 600 Finnish adults found that nearly all had frayed, torn or otherwise abnormal rotator cuffs -- yet most had no symptoms.

A "digital gut" predicted which probiotics and highfiber diets would take hold in people's guts and produce healthier outcomes.

Teens need eight to 10 hours of sleep each night. A large majority get less than that, according to a national survey of U.S. high school students.

A new digital reconstruction of the face of an early Australopithecus specimen helps add details about the origins of our own species.

Rather than land astronauts on the moon, the Artemis III mission will now focus on docking and space suit tests in low Earth orbit.

Ice arenas and artificial snow now dominate the winter Olympics. Athletes there -- and everywhere -- may need to adjust how they train and perform.

Kids with math learning disabilities process number symbols differently than quantities shown as dots -- and it shows up in MRIs.