Discover where the phrase “back to the grind” came from, and how “grind” went from college slang for hard work to an everyday expression.

BIG QUESTIONS
How did personal injury lawyer billboards become so common across America? The answer is a combination of factors, including a nationwide spike in spending on legal advertising and the power of trends.
The small metal latch has been a familiar part of gas pump nozzles for decades, but why is it there?
Ever wondered why a secret advantage is called an "ace in the hole"? Discover the 19th-century poker origins behind this iconic idiom.
Ever wonder why we say "o'clock"? Discover the medieval origin of the phrase, how mechanical clocks changed timekeeping, and why the contraction stuck.
Hundreds of years after this Italian explorer was born, we were shouting his name across the pool—but why?
Fortune cookies as we know them today may actually been created by Japanese Americans.
Why is purple associated with royalty? The answer dates back thousands of years to an incredibly expensive dye made from sea snails.
The phrase “pie in the sky” has a surprisingly dark history. Learn how labor activist Joe Hill coined the expression in a song in 1911.
Why are basketballs orange? Learn how the familiar color came about and why it replaced the dark brown balls once used in the sport.
The more you know!
The white flag has symbolized surrender for centuries, but its use wasn’t random. Discover why white became the color of capitulation.
Test your problem-solving abilities and see how well you can think outside the box with this riddle challenge!
The historical narrative that began with one Italian scholar and lasted for centuries.
The phrase "elephant in the room" wasn't always about awkward topics. Here's how the idiom evolved over the past two centuries.
It depends on the location, but there are very important rules to the color of fire hydrants.
Why do we say “add insult to injury”? Discover the surprising history behind this common phrase, which dates back to Ancient Rome.
Originally adopted to hide traces of baldness and venereal disease, today the wig has become an indispensable part of English courtroom uniforms.
While the events of the epic poem cannot be verified, much of its content corresponds with historical and archaeological evidence.
Ears have a special significance in cultures around the world. Here's what it might mean if your left ear is ringing.
The tradition of wearing a yellow jersey in cycling races dates back to the Tour de France in the early 20th century.
U.S. mailboxes have been many different colors, but blue was adopted surprisingly recently. Here's the story behind the shade.
The phrase "put a sock in it" has been telling people to quiet down for more than a century. Here's the most likely story behind the expression.
Accidents, the search for immortality, and war may have all played roles in the development of these aerial attractions. Here's how the word "fireworks" came to be.