The iconic Pyramids of Giza are already one of the world's greatest enigmas. Last month the mystery deepened when a team of Italian scientists said they found a vast city stretching thousands of feet ...

Two men who lived around 2,500 years ago in what is now southern India have been brought to life in new digital reconstructions — and research into their remains is revealing secrets about their ...

A killer game of hide and seek.

Serious scientists at the renowned Harvard University have put forward the startling hypothesis that an unknown, technologically advanced civilization could have been hiding on our planet for ...