"The Great Pyramid at Giza is known to have an amazing character of concavity that each of its four faces is slightly ...

Hidden beneath the waters surrounding Japan’s Yonaguni island are the towering ruins of a 10,000-year-old city built by a ...

There's never a shortage of weird and wonderful historical theories that leave us scratching our heads. Pyramids not built by humans? Been there. Hidden chapter in human evolution? Done that. But ...