This past year, Tesla CEO Elon Musk made headlines for his controversial behavior. In an interview with Lesley Stahl, he explains why he does not "adhere to some CEO template." There's a new government study that examines how an excessive amount of screen time is affecting the brains of kids and adolescents. Anderson Cooper reports. Scott Pelley introduces us to Ryan Speedo Green -- an opera star who spent much of his childhood in juvenile detention. Those stories on tonight's "60 Minutes.' 

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