DrZap writes: "Saw this in a trade magazine, a UPS using a flywheel to store kinetic energy instead of batteries. Environment friendly and everything!"
DEAL: For $25 - Add A Second Phone Number To Your Smartphone for life! Use promo code SLASHDOT25. Also, Slashdot's now on IFTTT. Check it out! Check out the new SourceForge HTML5 Internet speed test! ×