In March of 1989 I agreed to be cameraman for a small expedition trekking across the Lacandon Jungle in southern Mexico. In a time before handheld GPS, we were lost within a couple days and remained lost for two weeks, only escaping by a minor miracle. As the days went by the jungle began to seem less and less like a jaguar here, a flock of McCaws there, a crocodile in the river, skyscrapers of trees overhead and began to feel like a single thing. And then one night while lying in my hammock amidst the cacophony animal cries I had a startling vision of Gaia. She wasn’t a middle-aged gal in a nightie but a stupendous serpent who occasionally shed her global ecosystem like a worn out skin. And...