Sure, Ring Mouse sounds like something you might catch from an out-of-control rodent population while on vacation in a foreign country. And yes, we'll admit that that the whole concept sounds a bit awkward to those who have spent their entire computing lives using more input devices, but we've heard some compelling feedback from those who've actually tried Genius's wearable wireless peripheral, and it turns out the thing is actually usable. Now you can get in on that action, seeing as how the company just announced North American availability for the wireless peripheral. For $70, you can get your hands on -- or, rather, in -- one of these things, if you're a Windows user. Of course, you could use it for an engagement ring; just plan on being single for a very long time.
As you may know, crafting a katana is a delicate process that involves carefully constructing a razor-sharp high-carbon edge around a soft shock-absorbent core. One day though, smiths and forging fires could be replaced by electrode-wielding mad-scientists, with the technology to selectively harden and soften metal at will. At least that's what we envisioned when we read about Jörg Weißmüller's breakthrough research in the field of nanomaterials. The German scientist discovered that by placing precious metals in acid he could create tiny ducts through corrosion. Once those channels are flooded with a conductive liquid, electrical currents can be used to harden the material and, if you change your mind about the brittle results, the effect can easily be reversed to make it soft again. The tech could eventually lead to self-healing vehicle armor or scratch-resistant cellphones -- but, really, we just want to zap our way to a high-quality samurai sword. Physorg
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