A theory from the 1980s warned that smoke from a nuclear war could darken the skies and cause what?

Which one-named R&B singer made his Broadway debut as lawyer Billy Flynn in "Chicago" in 2006? A theatrical adaptation of which Edgar Lee Masters poetry collection premiered on Broadway in 1963? Which private detective is the subject of the 1971 theme song asking "Who's the black private dick that's a sex machine… A horse race then 1½ miles long was inaugurated in 1875 in which state, with Aristides winning by two lengths? Which name for a theory of the origin and spread of humankind is also the title of the Best Picture Oscar winner for 19… Which word names both a thick knitted or crocheted blanket and a native of Kabul? Which word means both a thief and the inside bend of your arm? Complete the name of the eerie light seen over marshes at night: "will-o'-the-___".