From evidence "that tropical rain forests may now be expanding faster than they are being cut down" to the improving health of U.S. ocean fisheries to better outdoor air quality in American cities with the worst air pollution, there's more to be optimistic about than there is to be troubled about.
- Americans are actually generating no more trash per-capita than they were in 1990.
- Our production of hazardous waste has fallen from 36 million tons in 1999 to 28 million tons in 2005.
- Lead levels in our blood have shown "a steady decline since the 1980s."
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