Civilizations have recognized the power of cities to heat themselves up and cool themselves for centuries. City architects in ancient Rome called for narrowing streets to lessen late afternoon ...

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 ...

Throughout history, numerous ancient technologies have left researchers and historians pondering the true capabilities of early civilizations. Were they more advanced than we give them credit for? By ...