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Neil deGrasse Tyson addresses sexual misconduct allegations: "The concept of personal space has evolved"

Astrophysicist Neil deGrasse Tyson is sharing his letter archive and revealing his thoughts on everything from the meaning of life, to the existence of Bigfoot. His new book, "Letters from an Astrophysicist," contains more than 100 letters, Facebook posts and other exchanges with fans, detractors, and family members. Tyson is the director of the Hayden Planetarium at the American Museum of Natural History in New York. He joins "CBS This Morning" to discuss his new book and what he's learned since he was accused of sexual misconduct.
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