The author Bill McKibben has argued in several books that the modern world, with its untrammeled growth and destruction of traditions, is unsustainable. McKibben states that the global system of production and marketing is not only degrading the natural environment, but is also impoverishing the quality of life. But whereas the first two books focused on nightmare scenarios, Deep Economy has a hopeful message: by using methods we already have or are developing, we can not only tackle global warming, but also create economies that better serve our human needs.