A 10-year-old girl out on a shoreline stroll on a Wales beach literally stumbled upon five prehistoric dinosaur footprints.

Hygieia was a prominent figure in both ancient Greek and Roman mythology—she was the daughter of Asclepius, the god of ...

A single leaked hint exposed the CIA’s most puzzling code. But dozens of the world’s toughest ciphers are still waiting to be solved.

If it is a galaxy, it would be the oldest known galaxy in the cosmos, but it could also be a brown dwarf or an early black hole.