Many ecologists view human overpopulation as the foundation of all environmental problems.
ZPG is currently launching its Y6B campaign to focus on the year when the world reached six billion people. Symbolically, October 16 was chosen as the day. ZPG's intent is to get national media icons like Tom Brokaw, Dan Rather, and Peter Jennings to emphasize the problem all six billion of us face. Anyone following environmental issues can identify a variety of issues of critical importance in the United States or worldwide. Introduced species, destruction of natural habitats, and excessive environmental pollution are three obvious ones.