Are ice blocks better than air conditioning?

Air conditioning with ice blocks is taking root among some of the world's most powerful companies. Learn how air conditioning with ice blocks works.

How do the shoplifting prevention systems in stores work?

From bulky ink-filled attachments to small, sewn-in magnetic strips, stores use a variety of methods to prevent shoplifting. See how they all work in this article.

How Electronic Ink Will Work

Electronic ink promises to be an amazing, breakthrough technology that we will all be using in five years -- it will completely change books and newspapers. Learn all about it.

How Facial Recognition Systems Work

How unique is your face? Learn how facial recognition systems can pick a face out of a crowd, extract it from the rest of the scene and compare it to a database of stored images.

How Holographic Environments Will Work

Holographic environments make the virtual world truly tangible. Find out about the development of real-life, interactive "holodecks"!

How Refurbished Electronics Work

You need a new computer, but you don't have enough cash to buy the latest model. You're perusing the classifieds looking for a used one, when you come across an ad for a refurbished laptop. What does that mean?

How Speech Recognition Works

Speech recognition technology allows people to compose documents and control their computers using their voice. It can be used in homes or businesses, for a variety of uses.

How UPC Bar Codes Work

Nearly every item that you purchase from a grocery store, department store or mass merchandiser has a UPC bar code on it somewhere. Ever wondered why?