
It sounds like a passive-aggressive barb when we tell a performer to "break a leg." But, as much as the understudy might wish it, the phrase means good luck.

What does it take to fix one really, really expensive mirror? And does its breakage cause bad luck? The Hubble Space Telescope repair story.

Why do weeks have seven days? Is there some celestial explanation like with days, years and (sorta) months? Or is it human randomness?

The word "democracy" gets thrown around a lot. Is the United States a democracy? The short answer is "no." Here are the details.

Do hangovers get worse as you get older? Bad news buddy: yes! Here's why you'll feel even lousier after just a short night out.

We should have 11,141 representatives in Congress all fighting for microphone time while investigating each other. Why don't we?

This history of gunpowder goes way, way back, to Chinese alchemists trying to invent the elixir of life, or perhaps a way to turn everyday junk into gold.

The Constitution was signed on September 17, 1787 in the Pennsylvania State House, the same place where the Declaration of Independence was inked. It's also where George Washington received his commission as Commander of the Continental Army.

Pool tips: How to play a respectable game of billiards even if you're a complete rookie. Who says you can't look confident at the next party or bar outing?

Is it constitutional to do a constitutional do-over? The 18th and 21st Amendments, virtue signaling teetotaling, then not so much, seem to imply it's OK.