Factoraly

Halloween is a holiday that kids love, but it used to be more of a grown-up holiday. Find out all about the spookiest festival in this episode.

These fascinating creatures have been keeping us company for quite some time - and since they don't eat grain, they've been keeping our stores rodent-free for thousands of years, too. Find out more here. And remember to click on the pics to go ferret-like down the rabbit holes.

Dolls are ubiquitous. Wherever there are children, you'll find dolls. They are playmates who never argue, friends who always agree with you, and companions you can take everywhere with you.This week's episode is all about them.

Everyone loves a balloon, right? Well, most people, anyway. This inflated story of the party favourite is floating about and popping with facts.

Where would we be without windows? We wouldn't know, because we wouldn't be able to see out and work out where we were! From humble beginnings as holes in the wall, windows have come a long way, with whole buildings now seemingly being made from one enormous window!

Ding Dong - as Leslie Philips used to say. This one is all about the sonic metal . Bells have been around for a while, and we hear them every day—on the bus, at home, in the street, walking into shops, at cash registers—bells are everywhere. In this one, we delve into the history of the bell and work out what makes them so special.

Nothing is more ubiquitous than colour. It's everywhere.