BIG QUESTIONS

We can thank the ancient Babylonians and Egyptians. Here's how people decided how long an hour, a minute, and a second are.

Venomous bites can paralyze and kill prey. But what happens when a snake is exposed to its own toxins?

Up to 35 percent of the population experience this sneezy reaction to bright light.

A little grease goes a long way.

According to theories, everything that could occur or exist does exist in at least one universe...whoa.

A chemist's guide to smelling good.

“Goody Two-Shoes” was a real person—or at least, a real fictional character. It was the nickname of the title character in a nursery tale called "The History of Little Goody Two-Shoes," published anonymously around 1765 by John Newbery.

It all comes down to the root of the matter.

A single company makes more than 7 billion zippers a year.

Have you ever clicked on an exciting link or potentially explosive news story, only to find yourself watching the video for Rick Astley's 1987 hit 'Never Gonna Give You Up'? Then you’ve been rickrolled, my friend.

Hint: there's no physical contact involved.

Let's break it down.