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    CNN Student News - March 21, 2014

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CNN Student News - March 21, 2014

A brain drain threatens China, scientists examine the "5-second rule," a hacker exposes WiFi insecurities, and technology helps war victims in South Sudan.

CNN Student News - March 21, 2014

A brain drain threatens China, scientists examine the "5-second rule," a hacker exposes WiFi insecurities, and technology helps war victims in South Sudan.