Obama Notified of Boston Marathon Explosions

April 15 (Bloomberg) -- Powerful explosions killed two and injured 23 near the finish of the Boston Marathon, police said. The first blast near Copley Square caused a huge puff of white smoke and was followed by a smaller one. Police at the corner of Boylston Street and Clarendon Street said there were many casualties. Bloomberg's Julianna Goldman reports. Note: Footage may contain graphic content. (Source: Bloomberg)
Humana Deal Gives Aetna Strength in Retail Market: CEO
31:25 - Mark Bertolini, chairman and chief executive officer of Aetna Inc., talks about Aetna's agreement to purchase of Humana Inc., consolidation among U.S. health insurers and the impact of the Affordable Care Act on the industry. He speaks with Alix Steel on Bloomberg Television's "Bloomberg Markets." (Source: Bloomberg)
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