Hosted by Jane Pauley. In our cover story, Rita Braver examines how scientists won the war against the 20th century polio epidemic. Plus: Seth Doane interviews survivors of coronavirus; Pauley talks with Marlo Thomas and Phil Donohue, celebrating their 40th wedding anniversary, about their book that explores the secrets behind successful marriages; Tracy Smith chats with ?Barry? and ?Happy Days? star Henry Winkler; Jill Schlesinger examines retail winners and losers from the pandemic; Mo Rocca dishes up some comfort food, while Martha Stewart is in the kitchen baking a special treat; comedian Jim Gaffigan realizes something he?s missing in his seventh week of quarantine; and David Pogue welcomes the creators of entertaining and music-filled quarantine videos to their very own awards ceremony ? the ?Sunday Morning? Sunny Awards!