A purification ceremony in Bali is trending on TikTok. While some locals welcome the interest, others are concerned that their religion is becoming a wellness trend.

Historians and divers are trying to retrieve prehistoric clues from beneath the waves—but they have to act fast.

The Corriental reservoir was not contaminated at all. (1) Other ancient civilizations had their own water filtration systems ...

Mysterious mounds on Mars were formed by ancient water, says a British study. These mounds are all that is left of a landscape, roughly the size of the UK, that has been almost entirely eroded away.

Hypothetical scheme of the ancient water purification system at Tikal ... serves to filter out larger and smaller contaminants as well as bacteria and other potential disease carriers.