By Emily Mitchell/Reported by Wendy Cole

Thirty years has passed since Jane Goodall entered the leafy world of the chimpanzees. The subject of a forthcoming National Geographic Explorer TV special, Goodall, 56, brings her experiences up to date this fall in her seventh book, Through a Window. By now, she's an old family friend of the animals. The favorite male sitting by her side is the eldest grandson of Flo, the first chimp Goodall studied in Africa. Keeping in mind that his mother was "fascinated with everything that had to do with sex," Goodall named him Freud.