Biographer Walter Isaacson on what motivates Elon Musk

Elon Musk is one of the most famous people on the planet and one of the wealthiest. But Musk is also among the most controversial public figures because of his behavior, including the spread of misinformation, racist and sexist remarks and his political ideas. Now, the highly-anticipated biography of the tech mogul is on bookshelves. Amna Nawaz discussed the book with author Walter Isaacson.