Beneath Kentucky’s rolling hills, the world’s longest cave system preserves a snapshot of ancient seas and the fearsome ...

Sea monsters like the Kraken, serpents or the Loch Ness monster may be just in our imagination, but across history, these stories have roots in reality. Today, we still like to exaggerate and tell ...

The historian Procopius described how a creature called Porphyrios terrified sixth-century sailors for 50 years. But what was it? A sixth-century Byzantine mosaic depicts an amphibious monster—though ...