We came. We saw. We littered. On each of mankind's six historic moon landings, dozens of objects were left behind-- ...

We're used to seeing a president and a vice president, but more than a dozen times throughout American history, there ...

In the United States, presidents are not elected directly-- instead, each state's votes are tallied and the winner ...

When we think of the space race, we generally think of initial race to put a human in space and the moon landing which ...

Today for most people who own cell phones, manual dialing is largely a thing of the past: your contacts are stored in ...

When the World Trade Center in New York City was first opened in 1973, employees didn't have to worry about turning off ...