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Politics : Stockman Scott's Political Debate Porch -- Ignore unavailable to you. Want to Upgrade?

To: stockman_scott who wrote (4968)	8/22/2002 12:31:47 AM
From: smolejv@gmx.net	Respond to of 89467

Tracking the ecological overshoot of the human economy (Proc. Natl. Acad. Sci. USA, Vol. 99, Issue 14, 9266-9271, July 9, 2002) ... Abstract: Sustainability requires living within the regenerative capacity of the biosphere. In an attempt to measure the extent to which humanity satisfies this requirement, we use existing data to translate human demand on the environment into the area required for the production of food and other goods, together with the absorption of wastes. Our accounts indicate that human demand may well have exceeded the biosphere's regenerative capacity since the 1980s. According to this preliminary and exploratory assessment, humanity's load corresponded to 70% of the capacity of the global biosphere in 1961, and grew to 120% in 1999. pnas.org