Kevin Costner on Horizon: An American Saga

Actor-director Kevin Costner won two Academy Awards for “Dances with Wolves,“ and now he's back with another western: “Horizon: An American Saga,“ a four-part epic about pioneers settling the West, which Costner himself helped bankroll. He talks with correspondent Tracy Smith about his decades-in-the-planning story (the first two chapters debut in theaters this summer), and about his future on the modern-day western series “Yellowstone.“ “CBS News Sunday Morning“ features stories on the arts, music, nature, entertainment, sports, history, science and Americana, and highlights unique human accomplishments and achievements. Check local listings for “CBS News Sunday Morning“ broadcast times. Subscribe to the “CBS News Sunday Morning“ YouTube channel: Get more of “CBS News Sunday Morning“: Follow “CBS News Sunday Morning“ on Instagram: htt