The days of rummaging for your cellphone may be over. Bluetooth-enabled timepieces now pull all your phone alerts right to your wrist. Eventually, these watches will communicate directly with the Web and serve as mobile hotspots on their own.
By Lawrence UlrichPosted 06.10.2011 at 10:45 am 23 Comments
Barely a year ago, you could get 40 miles per gallon on the highway in exactly one conventional gas-powered car--the two-seat, toaster-size ForTwo, from Smart. But with fuel prices approaching $4 a gallon, membership in the 40-and-over club is growing fast. Hyundai, Chevrolet and Ford have introduced efficient sedans and hatchbacks. Now an unexpected entrant is joining the club: Mazda, the carmaker that built its reputation on affordable performers like the 155mph Speed3 and the rotary-engined RX-8.
Along with causing water droplets to dance (which you can try at home) and protecting hands from liquid nitrogen (which you should definitely not try), the storied Leidenfrost effect can apparently help reduce drag, possibly cutting fuel emissions for cargo ships.
By Cornelius HowlandPosted 06.12.2009 at 11:51 am 8 Comments
You'll save some energy turning your computer off for an hour, but those modest energy gains might come at the expense of your computer's longevity. To figure out just how much energy an average computer consumes during its various states of use, we asked Harvard University physicist Wolfgang Rueckner to run a few tests on his 2005 iMac G5.
Don't make everyone waste time leaving their offices—the Web-conference software dimdim.com runs right in your browser. Along with its voice and video capabilities, the program lets you present PowerPoint slides, share your desktop, and even shine a laser pointer on a virtual whiteboard.