Defining a city using cell-phone data

Humans are becoming more urban, with more than half of the world's population now living in cities. This rapid growth poses unique challenges to both the study and governance of cities—a challenge made harder because we ...

No warrant needed to get cell phone location: US court

Police don't need a warrant to obtain mobile phone location data for a criminal investigation, a US appeals court ruled Tuesday in a case closely watched for digital-era privacy implications.

US teens go mobile for Internet, survey says

Most American teenagers use their phones to access the Internet, with one-fourth of them going online mostly on their mobile device, a survey showed Wednesday.

When talk is free: The effects of pricing plans on consumer demand

From banks to telecom providers, various industries are moving to pricing plans that offer a certain amount of "free" service. Bank customers are allowed a certain number of free ATM withdrawals each month, and cell phone ...

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