This incredible, mysterious site was one of the 20th century's most groundbreaking discoveries, and it's a place that's still ...

(Mark Garlick/Science Photo Library/Getty Images) A strange chunk of metal that lay hidden in the soil for thousands of years ...

Ohio’s famous Serpent Mound has long remained one of America’s most iconic, mysterious, and hotly-debated prehistoric ...

An obscure ancient Egyptian text discovered in the 19th century led to discoveries that rewrote the timeline of early medical ...