NOVA explores the nature of human perception through the puzzling condition called visual agnosia, the inability to recognize faces and familiar objects, made famous in Oliver Sacks' book, The Man Who Mistook His Wife For A Hat.

Velociraptors and primitive birds are among the fabulous fossil finds as NOVA accompanies an American Museum of Natural History expedition to the Gobi Desert. The trip relives the exploits of the Museum's dashing explorer of the 1920s, Roy Chapman Andrews -said to be the real-life model for Indiana Jones.