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How To: Make manganese dioxide electrodes

Various electrochemical reactions requires that anodes do not degrade when used. Carbon is cheap, but degrades easily and platinum is extremely expensive. In a previous video, you learned "How to make cobalt and manganese nitrates", and you saw that titanium could be used as a cathode, but not as an anode due to an effect called passivation.

How To: Prevent Acne with Doctor Recommended Treatments

Acne develops when pores become blocked with dead skin cells and oil. They usually disappear over time but sometimes they leave a scar. When those blemishes form white blood cells rush to the surface to help heal the area. But occasionally a scar forms. Popping and picking can send bacteria further into the skin and increase the blemish and it greatly increases the likelihood that a scar will appear. Nodules and cysts are more severe blemishes and have an increased likelihood of leaving scars...

How To: Sen an anonymous text message

Want to send text messages, but don't want your recipient to know they're from you? You can use a website called AnonText.com, which lets you send anonymized text messages to any cell phone number. Use your computer, or, if you have a smartphone (like an iPhone, Droid HTC Evo), then you can navigate to the website using your phone's browser capabilities.

How To: Root a T-Mobile G2 Google Android smartphone

Root your G2 the easy way with an app you can download directly from the Android market! Unlock your mobile phone's hidden potential by running custom ROMs, overclocking it, and even turning it into a wireless hotspot with WiFI tethering. For all of the details, and to get started rooting your own G2 cell phone, take a look.