The Israeli Department of Defense has cooked up the world’s smallest gyroscope—powered by lasers and as small as a single grain of sand. The new gyros are sensitive enough to track your position and movements anywhere—no GPS required.

The underlying tech is the same that’s found in aircraft and seafaring ships—minute physical changes are compared to each other, calculating a new position without the need for an external reference point.

Android: If you use Android’s awesome turn-by-turn navigation, you probably use the Car Home app to easily operate it from a car mount. Google’s updated the app and moved it to the Market, à la Gmail, adding a few cool features along the way.

Eager for a piece of WP7? Here are the top phones you should consider, broken down by US carrier. You’re welcome.

T-Mobile

HTC 7 Mozart
It trumps the WP7 handsets announced by LG and Samsung today, with an 8MP camera and Xenon flash, and also has Dolby Mobile and SRS Wow HD for “virtual surround sound.”

Otherwise, it’s very similar to the other WP7 phones HTC has announced, with a 1GHz Snapdragon processor, 512MB RAM and 576MB of ROM, and 8GB of internal storage.

Oh, I’ve been waiting for this little camera for a long time: A pro-worthy Nikon point-and-shoot. After the bizarre melange of features in Nikon’s last flagship camera—uh, ethernet jack?—the P7000 is nakedly all about performance.

NASA researchers have successfully completed the first demonstration of a prototype tsunami prediction system. Using global and regional real-time data from hundreds of GPS sites, the system can quickly assess large earthquakes and accurately predict the size of resulting tsunamis.