How Many Teens Are Using WhatsApp?

Feb. 20 (Bloomberg) -- Microsoft Research Principal Researcher danah boyd discusses teens use of messaging apps and social media on Bloomberg Television's "Bloomberg West." (Source: Bloomberg)
How China Plans to Tackle Pollution Problem
48:03 - Bloomberg New Energy Finance's Justin Wu discusses China's pollution problem with Bloomberg's Angie Lau on "First Up." (Source: Bloomberg)
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