The ocean hides secrets deeper than imagination, lost cities, ancient treasures, and forgotten civilizations waiting to be uncovered.Explore the 12 most incredible underwater discoveries ever made, ...

By Issy Ronald, CNN (CNN) — Archaeologists working in an ancient Mayan city have unearthed a mysterious 1,700-year-old altar whose bright decorations and grim contents may hold the key to ...

By Issy Ronald, CNN (CNN) — Archaeologists working in an ancient Mayan city have unearthed a mysterious 1,700-year-old altar whose bright ...