From deafening monkey howls to snapping crustacean claws, animals use powerful sounds to do everything from claim territory to stun prey.

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In the days of the Cold War, the United States used the Voice of America radio station to spread information in countries without speech and press freedoms. Now it’s begun a 21st century equivalent to bypassing censors using independent Internet and mobile phones technology. Through the shadow network effort, reported yesterday by The New York Times, involves activities such as building a mesh network of suitcase-housed wireless Internet access points. Another $50 million project seeks build an independent mobile phone network in Afghanistan that the Taliban can’t shut down.

Until two months ago, the typical growth rate for the previous year was at least 20 million new users, but Facebook logged 13.9 million new users in April and 11.8 million in May, according to Inside Facebook’s data. While much of the company’s growth comes from late-to-the-party countries, early adopting countries such as the U.S. and Canada posted significant user losses during May, according to Inside Facebook data. The U.S. lost nearly 6 million subscribers to end the month with 149.4 million users, and Canada lost 1.52 million users to finish with 16.6 million.

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