Environmentalism is a broa philosophy and social movement centered on a concern for the conservation and improvement of the natural environment, both for its own sake as well as its importance to civilization. Environmentalists frequently speak of a planet or place faced with a plethora of grave and urgent threats; often associated with unbridled consumption, economic growth, materialism, insensitive development, and booming human numbers. Perhaps most problematic from an environmentalist perspective is the modern view that humanity's fate is divorced from that of the natural world, and that our responsibility to nature is - at best - limited to the satisfaction of shallow desires.