Natural Capitalism: Creating the Next Industrial Revolution is a 1999 book co-authored by Paul Hawken, Amory Lovins and Hunter Lovins. It has been translated into a dozen languages and was the subject of a Harvard Business Review summary. Natural capitalism recognizes the critical interdependency between the production and use of human-made capital and the maintenance and supply of natural capital. The authors argue that only through recognizing this essential relationship with the Earth's valuable resources can businesses, and the people they support, continue to exist.