News bites: Music industry sales rise

Music industry sales rose last year for the first time since 1999 on the strength of digital revenue, The New York Times reports.

Twitter may really be worth $10 billion, Wall Street Journal columnist Dennis Berman argues.

The Pentagon unveiled a plan to enable its smartphone and tablet users to share classified data, Reuters writes.

Clearwire plans to tap financing made available by Sprint, complicating Dish's bid for the company, according to The Wall Street Journal.

Cancer fears could prevent Google Glass from ever becoming a phone, Quartz claims. 

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