"Critical Habitat," authorized under the Endangered Species Act, has become a favorite device for government control of private property. Nearly 2,000 species have been listed as endangered or threatened; government has only to declare an area to be "critical" to the species, then the government can dictate how the land may be used.
All of these measures work together to achieve the original goal of the Man and the Biosphere Program: to conserve most of the planet for wildlife, forcing people into "sustainable communities." This objective has now been codified into international law in the form of the Convention on Biological Diversity.
The IUCN, author of this concept, also devised Agenda 21, adopted in Rio de Janeiro in 1992 at the U.N. conference on Environment and Development. Agenda 21 is a laundry list of recommendations designed to reorganize society around the central principle of protecting the environment.
If you have any questions about Agenda 21, ask Carry_Okie. He is an EXPERT WITNESS.