How the Crest Team kept the Cavity Creeps under control

In this very easy but rewarding "hack", a nice acoustic guitar is made to sound like a nasty banjo. The trick? Put a balloon in the hole and blow it up a bit. READ THE REST

Here is the most impractical and beautiful entry so far in the YouTube genre of taking a lump of random old metal and turning it into a kitchen knife. Bismuth (melting point 271.4°C) is melted into a block, sawed into the desired knife shape, carefully re-dipped to coat it in a profusion of crystal forms,… READ THE REST

Good news, Texas! All you need to charge your phone is some aluminum foil, copper wire, charcoal, a charger cable you don't mind cutting, and urine. Sure, if you're squeamish, you can use salt water instead. READ THE REST

Students and staff at Stanford University, the University of California, the University of Colorado, and other institutions were warned to be on alert after a widespread security breach compromised personal data files during a nationwide cyberattack on the schools' computer systems.  Meanwhile, someone is selling personal information on 21 million users of the mobile parking… READ THE REST

The difficulties of pandemic life have brought some unexpected consequences over the past year. With some transportation options closed and everyone mostly stuck in their houses, people got stir crazy for an alternative — and bicycle sales surged nationwide. Unfortunately, that wave of new bike riders brought an all too expected result: a corresponding surge in… READ THE REST

An extra power bank or charging hub that keeps your smartphone or tablet powered up in a pinch is always a great idea. But those batteries will only handle the needs of your small electronics. They aren't really built for those heavy-duty power tasks that you might encounter. You know…like when your car battery is… READ THE REST