BIG QUESTIONS

It’s a diagnostic feature for our species, but its origins have been a mystery.

The IRS becomes the proud owner of a huge batch of new paperclips each year. So, what do they do with the influx of office supplies?

A brief history of how we arrived at that number, and who should get credit for it.

So zed is British and zee is American, yes? Well, that might be the case today, but once upon a time things were quite different.

We all know a football field is 100 yards and an Olympic swimming pool is 50 meters, but exactly how big are the buildings we pass by every day or the sites we learn about in school? Here’s how everything measures up—in terms that are easy to understand (

If you've ever placed a mirror in front of your dog, you've probably wondered what she thinks she's seeing (besides a good dog!).

What they mean and how to remember the difference.