Tuesday, for the first time, Google Glass was made available to the general public. As part of the one-day-only offering, anyone in the U.S. could buy the $1,500 face-mounted computers and get a free pair of glass or sunglass frames.
Glass, Google's high-profile entry into the world of wearable tech, may help launch a revolution if it's released later this year as expected. But test models already on the street have begun playing a more unlikely role -- as symbols in a simmering fight over Silicon Valley's impact on the city of San Francisco.
The lack of phone calls, texts or social media postings from missing Malaysia Airlines Flight 370 has raised a number of questions about how cell phones work on airplanes. A U.S. official told CNN a cell tower in Penang, Malaysia, detected the co-pilot's cell phone searching for service before the flight vanished.