Scientists say they may have discovered the lost city of Atlantis buried deep under the marshlands of southern Spain. The legendary city is believed to have been "swallowed up by the sea," as the ...

Scientists have found an 8,500-year-old human settlement under the sea near Denmark. This small city went underwater when the last Ice Age ended. As huge ice sheets melted, the sea levels rose and ...

When Plato first described Atlantis more than 2,000 years ago, he wrote of a powerful island civilization that vanished beneath the sea. Although most historians believe the account was not literal, ...