Startup DynaOptics uses lenses that move from side to side, rather than forward and backward, for a high-quality optical zoom in smartphones.
A simple, cheap device turns sunlight into hydrogen fuel.
Apple’s SIM card that lets you switch wireless carriers on the fly could lead to cheaper communications.
Sony and Microsoft release their first video-game consoles in seven years, but they’re battling for a world of play that is rapidly changing.
The smaller tracking devices become, the more applications they find.
The company’s social scientists are hunting for insights about human behavior. What they find could give Facebook new ways to cash in on our data—and remake our view of society.
The blue LED might save more energy than just about any other technology.
An app called Yovo uses a clever trick to make it hard to preserve its ephemeral messages.
Not everyone thinks Google’s attempt to reinvent the computer will work.
Urban "Fingerprints" Finally Reveal the Similarities (and Differences) Between American and European Cities
Travelers have long noticed that some American cities “feel” more European than others. Now physicists have discovered a way to measure the “fingerprint” of a city that captures this sense.