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When Microsoft introduced Windows 8 last year, the software giant billed the new operating system as one of the most critical releases in its history. The system would bridge the gap between personal computers and the fast-growing mobile world of tablets and smartphones.

American companies that do business with China make good money. They also lose a lot of money there to cyber thieves, who routinely hack into the computers of the U.S. firms and steal their trade and technology secrets.

Yahoo CEO Marissa Mayer, who sparked plenty of discussion about work-life balance when she prohibited telecommuting this past winter, took a step in the opposite direction, Tuesday: Mayer expanded Yahoo's parental leave policy.

Americans are suspicious of drones. Reports of the unmanned aerial vehicles' use in war zones have raised concerns about what they might do here at home. For instance, in Seattle earlier this year, a public outcry forced the police department to abandon plans for eye-in-the-sky UAV helicopters.