Changes

"Since the publication of ''Silent Spring '' and the birth of the modern environmental movement, the environmental community has worked hard to arrest the deterioration of the Earth’s health. Many battles have been won, but we are losing the war. The Earth’s capacity to support the economy continues to deteriorate. The gap between what we need to do to arrest the deterioration of the Earth and what we are doing continues to widen." <ref>[http://www.earth-policy.org/About/index.htm About], Earth Policy Institute, accessed November 28, 2007.</ref>