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Very interesting commentary on the rise of wearable technology. How do we balance their (potential) use as assistive devices and our privacy rights?

By the year 2050, some 7 billion people will be living in cities. As many people who live on the planet today will be city dwellers just 38 years from now. Two years ago, for the first time in human history, over 50 percent of the population of the world now lives in cities, and that trend is accelerating. Every month, 1 million people in the world move to a city. If we don't get cities right, we're kind of - don't have a very bright future as humankind.