CBS News Sunday Morning : Season 20 Episode 3

Singer Liza Minnelli; actress Kristen Dunst (movie, "The Power of the Dog"); John Dickerson covers President Joe Biden's first year in the White House; the life and works of modernist Marcel Duchamp; actor Tony Dow; David Pogue interviews a light bulb collector; Rita Braver covers the fascinating lives of eels; a couple finds each other, after many years;