Hosted by Jane Pauley. In our cover story, Ben Mankiewicz looks at how streaming has changed moviemaking and moviegoing. Also: Tracy Smith sits down with John Lithgow and Geoffrey Rush, stars of the new horror film “The Rule of Jenny Pen”; Norah O’Donnell talks with Warren Buffett about his friendship with the late Washington Post publisher Katharine Graham; Robert Costa looks at the potential fallout of the inflammatory Oval Office meeting between President Trump and Ukrainian President Zelenskyy; Jim Axelrod looks back at the king of late-night TV, Johnny Carson; Lee Cowan checks our Hollywood memorabilia at Julien’s Auctions; and David Pogue learns how alien languages are constructed for movies and TV.

Guest host: Mo Rocca. In our cover story, David Pogue examines how Big Tech companies are turning to nuclear power to help fuel artificial intelligence. Also: Tracy Smith profiles comedian John Mulaney; Lee Cowan talks with Lindsey Vonn about her return to competitive skiing; Martha Teichner reports on a new Broadway musical inspired by the Cuban music album “Buena Vista Social Club”; Barry Petersen reports on efforts to repatriate art looted by the Nazis; Luke Burbank looks at commercial applications of prison labor; and Seth Doane visits Naples, where treasures donated to the memory of San Gennaro are on display.