We can't tell you how many times a day we wish we could flip a switch and turn a wall on or off, and it sounds like at least some scientists at the Imperial College in London and the University of Neuchatel are on their way to creating just that. Or at least that's what they'd have us believe; they won't really discuss their discoveries too openly, but they claim to have created crystals invisible to the human eye, which could theoretically imbue building materials and make things (like walls) invisible. We're a little skeptical, so we encourage said boffins to um, show us. That is, if they can find where they placed their fantastic invisible material.

[Thanks, Nick]

2007 Audi Q7 in-dash system leaked