History | HowStuffWorks

If you imagine the eight major planets in a single line stretching out from the sun, this alignment occurs roughly every 13.4 trillion years. And our solar system is 4.5 billion years old.

In the U.S., the bar for running for president is deliberately set low – only age and citizenship rules are written into the Constitution. Still, are there any laws that would bar a felon from running for the highest office in the land?

Irony is one of those things that everybody seems know about but few seem able to precisely define. To make matters more complicated still, there are different kinds of irony (cosmic irony, dramatic irony, verbal irony and so forth).

Absolute value is a mathematical concept often used in conjunction with a number line or graph to represent the relative value from zero (modulus). To illustrate this idea in a different way, the absolute value of a number can be closely related to distance...