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Take Air Quality In The United States Today: It's About 30 Percent Better Than It Was 25 Years Ago, Even Though There Are Now More People Driving More Cars.
-Jared Diamond
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Take Air Quality In The United States

Jared Diamond
Take Air Quality In The United States Today: It's About 30 Percent Better Than It Was 25 Years Ago, Even Though There Are Now More People Driving More Cars.
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