Rocca looks back on the life and legacy of singer Tony Bennett. Plus: Tracy Smith sits down with "Barbie" star Margot Robbie; Jonathan Vigliotti finds out how martial arts star and activist Bruce Lee is still providing inspiration 50 years after his death; Barry Petersen interviews Bill Gates about next-generation nuclear power technology; Martha Teichner talks with an 11-year-old beekeeper, David Pogue explores the land surrounding an English castle where nature has been allowed to run her own course.

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