Who invented the light bulb in 1879?

Neil Armstrong and Buzz Aldrin were the first two men in the entire world to do what?

Who is the creator of the classic book characters Tom Sawyer and Huckleberry Finn?

Which country is both an island and a continent?

If a football field is 100 yards long, how many feet long is the football field?

Since the late 1930s, what calendar date has been designated for the inauguration of the United States President

In the initials of the federal agency knowns as NASA, what does 'A' stand for?

Which revolutionary leader wrote the influential 'Common Sense' in 1776?