Why are sunsets red, for that matter? And why is space black? The answer is all about how light interacts with Earth's atmosphere.

BIG QUESTIONS
Is "rule of thumb" really about an English law that made it legal to beat one's wife? Here's the truth about the etymology behind "rule of thumb."
The phrase "cold shoulder" first appears in a novel by Sir Walter Scott, but a popular legend holds that it may connect to a rather passive-aggressive dinner-hosting technique.
Ever noticed the mirrors behind bar shelves? They’re not just decoration—they make spaces feel bigger, brighter, and even safer.
The popular motivational anecdote "burn the boats" or "burn the ships" is a reference to Hernán Cortés's conquest of the Aztec Empire—but there's one major issue with it.
You're not imagining it—the dryness and pressure of airplanes truly does alter our sense of taste.
Ever wondered why flight attendants insist your tray table be up for takeoff and landing? The real reason is a matter of life-or-death airline safety.
Why is an audio clip called a soundbite? The term dates to the 1970s and compares a short recording to a small bite taken from a larger whole.
Why do photographers say “cheese”? Explore the quirky global history and linguistic science behind the word that helps people smile for photos.
Dalmatians became firehouse icons long before modern fire trucks existed. Here’s how the spotted dogs earned their place beside firefighters.
Does this phrase really refer to narrowly avoiding being buried alive? Here's the truth about where "saved by the bell" comes from.
There's a lot of strategy behind that blend of bergamot, jasmine, citrus, and musk. Here's why luxury hotels smell so good.
There's a reason why your Aquafina might taste different from your Fiji—here's why different types of bottled water really do taste different.
Airplane cabin lights aren’t dimmed just for comfort. Here’s how the practice helps passengers, crew, and pilots stay safer during flights.
From a boy who claimed he remembered life as a World War II pilot to a girl who said she remembered the man who was her husband in her past life, these stories have mystified generations.
Why do we buy eggs 12 at a time? The answer may trace back to old British currency.
Museum fatigue is real—and science says it’s not just in your head. Here’s why wandering through galleries can leave your brain and body completely drained.
Astronauts report smelling one particular scent upon returning from space.
The little mint at the end of your meal might be doing more than freshening your breath.