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How Digital Jewelry Will Work

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In the next wave of mobile computing devices, our jewelry might double as our cell phones, PDAs and GPS receivers. Get a look at these new microdevices.

How Radio Controlled Toys Work

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RC toys come in many varieties from cars to robots. Learn about the parts of a radio controlled toy and see how RC toys operate without the aid of wires.

How Electronic Ink Works

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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!

10 Things You Can Do to Help Save Earth

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Climate change is the defining issue of our time, and we are at a defining moment of history. What can you do to make a difference? We've got 10 tips for you.

How PC Power Supplies Work

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The power supply in your PC provides all the different voltages your computer needs to operate properly. Find out how it puts the pieces together and troubleshoot your power supply problems.

Chances are you're reading this on a computer monitor. Do you know what's going on behind the scenes? Find out all about it, including dot pitch, refresh rates and the signals flowing along the graphics cable.

How Laser-powered Headlights Work

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Are laser-powerered headlights too intense for other motorists? Read about laser-powered headlight technology at HowStuffWorks.

How Radar Detectors Work

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If you have a lead foot, you may have invested in a radar detector. Find out how these devices pick up police radar and lidar and learn what a jamming signal does.