A war of words between two of the world's most famous tech billionaires could escalate to actual physical violence.
Mark Zuckerberg says he has accepted Elon Musk's challenge to a cage fight although it's still unclear whether the whole thing is a joke.
Mark Zuckerberg says he has accepted Elon Musk's challenge to a cage fight although it's still unclear whether the whole thing is a joke.
Ira Spitzer reports from San Francisco.
IN: After Mark Zuckerberg...
OUT: SOC
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