The subjects of Stone Age Cave paintings thunder onto the screen as NOVA explores Woolly mammoths. Recent discoveries show that the hairy ancestors of Elephants fought off extinction much longer than anyone thought, surviving on an isolated island in the Arctic Ocean until as recently as 4,000 years ago.

Entomologist and Pulitzer Prize-winning author Edward O. Wilson shows who's boss on this planet: ants. The professor's infectious fascination for ant civilization wins over even the most confirmed "formicophobe" (ant hater).