BIG QUESTIONS

This Earth Day, learn more about how to protect our planet—and the people who live on it.

Ever notice your phone camera flips selfies? Here’s why images appear mirrored, how front-facing cameras work, and what’s really happening behind the scenes.

Many casinos lack clocks. But is this really a strategic way to make gamblers lose track of time?

Why are hotel carpets so busy and patterned? From hiding stains to shaping space, there are practical—and surprising—reasons behind the design.

Explore what makes something vintage, including age, style, and cultural relevance, and how it compares to antique and retro categories.

It all comes back to one thing: safety.

Why do we feel so uncomfortable on someone else’s behalf? Breaking down the science behind secondhand embarrassment.

There’s a two-part history to the origins of why we call pants a “pair” when it’s only one item of clothing. We explore the interesting background here.

Is it the same flame from Greece to the games? Here’s how the Olympics keep the torch for the relay lit during its journey.

You’ll need to look back to Ancient Roman history to learn how the modern-day months got their names—and what they were called before.

There are reasons beyond proving the opportunity to check your hair and outfit.

Let’s take a look at the different processes for creating life-saving vaccines for multiple diseases.