Aldo Leopold has long been a guide to me. He is one of the great conservationists of our time. Below is a new film about him and about the Land Ethic he developed over his career as a forester in the U.S. Forest Service. Leopold beautiful essays and scientific papers are nearly 60-80 years old yet many of them still resonate with present day citizens and scientists. He captured in words the wisdom that we need today to respond to climate change—to create a new vision and set of principles to guide our decisions as individuals, communities and nations. Here is the trailer: