Fernbank Museum of Natural History will debut two new films, "Penguins" and "Hidden Universe," on Sept. 6 on the five-story, 72-foot-wide IMAX screen, featuring stadium seating and surround digital audio. "Penguins" is a live-action film celebrating the destiny of a very special King penguin, who returns to his birthplace in the sub-Antarctic. Known as Penguin City, the island is home to hundreds of albatrosses, fur seals and brawling elephant seals — as well as 6 million penguins.