The right kind of batteries are never around when you need them. I'm Mark Erickson, and this is Infinite Solutions: Home Edition. In this episode, I'll show you how to recharge dead batteries using other types of batteries that still carry a charge. IMPEDANCE RATIO CORRECTION: 2AA = 3 9V ... more.

Turn your PC into an ambush multimedia presenter. Get the schematic here: http://blog.makezine.com/archive/2009/02/weekend_project_usb_motion_detector.html ... more.

For the first part, we have made a dry ice bubble in a bowl. The dry ice, or frozen carbon dioxide (C02), is denser than the air we breathe so the bubble eventually plops down. For the second part, we have a simple dry ice bomb. We just put dryice and water into the bottle and threw it into the yard, and a shard of the bottle actually hit the window on the second floor... For the third part,... more.

Magnets are sticky fun! Here are a few useful and entertaining uses for magnets you may not have thought of! Don't miss the end for a bonus! ... more.

Just in time for April Fools Day! Make some tasty dog poop then play some great pranks on your friends or enemies!... more.

10 Science Tricks Video ... more.

See how magicians make water vanish using a super absorbent polymer. You can buy the Water Gel powder at: http://www.sciencebob.com/store/index.php ... more.

How far will Bluetooth go? You won't believe it! Get your own HyperGain Antenna: http://www.kipkay.com/buy-parts ... more.

Make a heavy duty, high-powered, laser guided slingshot! Get the parts at: http://www.kipkay.com/buy-parts ... more.

Using only vinegar and a few simple materials it is possible to construct a working battery. This video explains how to construct, and use, a battery like this to power a calculator. A good science project as part of an introductory electricity course. This project can be used as a science fair project. ... more.