In the rich world, the environmental situation has improved dramatically. In the United States, the most important environmental indicator, particulate air pollution, has been cut by more than half since 1955, rivers and coastal waters have dramatically improved, and forests are increasing.

Summary

This quote highlights the positive strides made in the environmental condition of developed countries. Specifically, it points out the significant improvements seen in the United States. The reduction of particulate air pollution by over 50% since 1955, the enhancement of rivers and coastal waters, and the growth of forests are cited as evidence of these improvements. It emphasizes that in affluent countries, efforts to address environmental concerns have yielded remarkable results and contributed to a better ecological outlook.

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