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).

Born joined at the pelvis, Siamese twins Dao and Duan were brought to the United States from Thailand to assess their chances for being separated surgically. NOVA covers the intricate planning and protracted operations that eventually made the two girls into two distinct individuals.