How Dangerous Are Concussions?

Video   Sep 14, 2017 | TED-Ed on You Tube

 

Each year in the United States, players of sports and recreational activities receive between 2.5 and 4 million concussions. How dangerous are all those concussions? The answer is complicated and lies in how the brain responds when something strikes it. Clifford Robbins explains the science behind concussions. 


 
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