Explosion Expert Breaks Down the Boston Bombings

April 15 (Bloomberg) -- Two powerful bombs killed two people and injured scores near the finish of the Boston Marathon, turning one of the world’s oldest road races into bloody chaos. Rhode Island University Professor Jimmie Oxley speaks on Bloomberg Television's "Bottom Line." Note: Footage may contain graphic content. (Source: Bloomberg)

After School App Co-Founders Plan to Combat Cyberbullying
25:58 - Michael Callahan and Cory Levy, co-founders of the After School messaging app, discuss how they plan to combat the use of the app for cyberbullying. They speak with Bloomberg's Emily Chang on "Bloomberg West." (Source: Bloomberg)
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