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Satellite tracking by shadow. NASA engineer Adrian Stoica has developed a technique that may one day help intelligence agencies identify people by the distinctive gait of their shadows.
A new Pepsi logo. Developed at a cost of more than $1 million, the "more dynamic and more alive" soft-drink logo will likely cost hundreds of millions of dollars to implement worldwide.
Layaway. A mainstay of the Great Depression, paying for a purchase over time (and delaying the instant gratification a credit card permits) is popular again. According to the Wall Street Journal, Kmart, TJ Maxx, and other retailers are reporting a rise in layaways since the credit crunch.
Invisible bikers. The Down Low Glow is a new type of bike light that illuminates riders fully—not just from the front or back. The tube light attaches to the middle of the frame and is visible from all angles.
CDs, DVDs, and all those unwieldy jewel cases. Ipodmeister.com will take your old CDs, convert the songs to MP3s, and send you a new iPod in return, writes N'Gai Croal in Newsweek. If all the current lawsuits are ever settled, real.com may one day copy and "bind" your DVDs to your hard drive so you can view (but not illegally copy) them.
Phone calls. For the first time, American cell phone users sent more texts than they made phone calls in the last three months of 2007.
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