The excavation of bone tools at Olduvai Gorge in Tanzania expands the range of ancient hominids’ cultural innovations.

Chemists identify a single molecule that naturally tiles in nonrepeating patterns, which could help build materials with novel electronic properties.

The disc of plasma surrounding the black hole at the heart of the Milky Way is constantly emitting flares both large and small.

A survey of museum specimens reveals that more than a dozen species of the birds sport biofluorescence in feathers, skin or even inside their throats.

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Vaginal microbes play a huge role in overall health, but researchers know relatively little about them. Citizen science could help change that.

On balconies and in backyards, Wi-Fi–enabled telescopes are connecting astronomy enthusiasts across six continents.

Water may have formed less than 200 million years after the Big Bang, suggesting some conditions for life existed far earlier than previously thought.

Male crickets in Hawaii softened their chirps once parasitic flies started hunting them. Now, it seems, the flies are homing in on the new tunes.

The “Helmholtz resonator” concept explains the frequencies of sound produced by clapping the hands together in different configurations.

The long-term survival of a patient with neuroblastoma suggests the personalized cancer treatment may work for solid tumors, not just blood cancers.

In the fourth episode of The Deep End, Jon Nelson and others describe dealing with emotions they haven’t felt in a long time.