How Will Musk And Branson Benefit From Mars Study?

Jan. 8 (Bloomberg) -- On today's "Big Number," Betty Liu reports on a study in Moscow with astronauts mimicking a 520 day trip to Mars. She speaks on Bloomberg Television's "In The Loop." (Source: Bloomberg)

Obama Plays Diplomat to Putin, Erdogan Tensions
53:01 - U.S. President Barack Obama spoke with Russian President Vladimir Putin and Turkish President Recep Tayip Erdogan at the COP21 summit in France, as tension mount between Turkey and Russia in the aftermath of the downing of a Russian fighter plane by Turkey last week. Bloomberg's Hans Nichols reports on "Bloomberg Surveillance." (Source: Bloomberg)
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