These ancient structures still stand - but the people who built them remain a mystery that history can’t fully explain.

Deep-sea sediment layers show rare microbial wrinkle structures that formed in environments far beyond the reach of sunlight. Dr. Rowan Martindale, a paleoecologist and geobiologist at the University ...

Archaeologists have discovered one of the largest settlements ever identified in Ireland's Baltinglass hillfort landscape.

During the season eight premiere episode of "The UnXplained" host William Shatner takes viewers all over the world to examine ancient structures.

Far below our feet, two colossal structures the size of continents sit atop Earth’s core, one beneath Africa and one beneath the Pacific Ocean. These dense, hot anomalies have puzzled geophysicists ...

The odd structure is distinct from anything seen in living animals and likely created a colorful display Jack Tamisiea A paleoartist’s reconstruction of Mirasaura grauvogeli, an early reptile from the ...