After months of being sidelined with a concussion, NHL superstar Sidney Crosby made a big comeback, scoring two goals against the New York Islanders. Dan Riskin, co-host of Discovery Channel's Daily Planet explains a Canadian doctor may have the key to Crosby's amazing comeback.
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Discovery Channels Dan Riskin on Crosby's comeback
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Published Wednesday, November 23, 2011 8:01AM PST