The best, the really intense bar-room talk used to be about Big Foot, flying saucers, Atlantis, what happened to the dinosaurs, what's on the dark side of the Moon, the Loch Ness monster, the Shroud of Turin, ghosts, the Bermuda Triangle, that sort of thing.
Now people talk about scientists who say they're going to use cloning and stem cells and genetic engineering to create a superior race.