As laboratories race to develop therapeutic drugs to treat COVID-19, President Trump announced Wednesday what he called a cure for the disease. Scott Pelley reports on some of the most promising leads for treating COVID-19. Former operatives for John McCain and George W. Bush are calling on Americans to vote for a Democrat in the presidential election. Sunday, Lesley Stahl reports on the Lincoln Project super PAC that's aiming to unseat President Trump. Bill Whitaker reports on the growing population of grizzlies -- and people — in Montana, and what that means for conservation -- and conflict resolution. Those stories on this week's "60 Minutes."

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