Northrop Grumman Expands Stock Buyout Program

May 17 (Bloomberg) -- Bloomberg's Betty Liu reports on today's "Top Headlines." She speaks on Bloomberg Television's "In The Loop."

Attenborough Calls for Cheaper Renewable Energy
29:59 - World famous naturalist David Attenborough discusses the move to solar energy at the UN climate conference, COP21. He spoke with Bloomberg’s Caroline Hyde.
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