A "Stranger in the Forest"

"The New York Times Magazine" called Galdikas the "third angel" of Louis Leakey, who also taught Jane Goodall and DIan Fossey. Galdikas has been studying orangutans in Indonesia since 1971, when virtually nothing was known about the animals in the wild. Since then, there have been articles about her, and her research in "National Geographic" and other magazines. She has just written a new book about her work, "Reflections of Eden: My Years with the Orangutans of Borneo."

Traveler Eric Hansen. In 1982, Hansen set out alone across Borneo, an island in Indonesia composed almost entirely of rain forests and populated by natives who have had the least amount of of contact with westerners. Hansen's account of his travels is contained in the book Stranger in the Forest: A Foot Across Borneo. Hansen has also travelled to North Africa, Afghanistan, Nepal, India and Southeast Asia.

Environmentalist William Powers' new book is Whispering in the Giant's Ear: A Frontline Chronicle From Bolivia's War on Globalization. Powers is also the author of Blue Clay People, about Liberia. He has worked for over a decade in development aid in Latin America, Africa and Washington DC.