Add Yahoo as a preferred source to see more of our stories on Google. One of history's biggest questions is: "How does an entire civilization disappear?" One can comprehend how an object or even a ...

Add Yahoo as a preferred source to see more of our stories on Google. Ancient civilizations were dropping technological bombshells long before Silicon Valley existed. Just this year, archaeologists in ...

Think ancient civilizations were primitive? The evidence suggests otherwise. From computers that tracked celestial events to concrete that grows stronger with age, our ancestors created technologies ...