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The Leap Motion Controller senses and tracks hand motions to allow users to browse the Web, play games and open documents. It represents another step in a goal of computer scientists: to make interactions with machines feel natural and easy, and to take away the barriers between humans and computers.

Hardware is a hot topic this year at the Texas-based festival famous for launching startups like Twitter and Foursquare.

Also: the best books coming out this week; Mindy Kaling is writing another memoir; and Francine Prose explores dreams in literature.

U.S. and other NATO troops are spending less time fighting the Taliban and more time making local Afghan governments self-sufficient. It's a slow process.

Living like a hunter-gatherer won't guarantee you'll be free of heart disease, according to a study of ancient human remains. Scans of mummies from preindustrial Egypt, Peru, the American Southwest and Alaska's Aleutian Islands finds evidence of hardened arteries thousands of yeas ago.

While its true that noroviruses are "perhaps the perfect human pathogens," as The Journal of Infectious Diseases reports, it also seems that Noma could have spared some of its diners from the pathogens if the staff had read emails from health inspectors.

Social media has definitely ingrained itself into our lives, but now it's seeping into our afterlives as well. A few companies are building services to maintain your online presence once you're six feet under. One's slogan is: "When your heart stops beating, you'll keep tweeting."

For this week's Sandwich Monday, we try Taco Bell's new Cool Ranch Doritos Locos Taco. It's everything you love about Cool Ranch Doritos and everything you love about Taco Bell and everything you hate about yourself!

Post-traumatic stress disorder has been a problem for many military members returning from combat zones. Now the military is looking more closely at whether its canine members suffer from PTSD in the same ways.

Chains like H&M and Forever 21 turn out new styles so quickly that they've been dubbed "fast fashion" retailers. While the stores reap big profits, many say the business model has hidden costs, like encouraging poor labor practices and churning out cheaply made products that quickly end up in landfills.