Our air is worse than the EPA says.

Grist
By Justine CalmaMay 1, 2018, 4:50 pm120 pts
The prevailing wisdom is that U.S. air pollution has been on a steady decline since the 1970s. That’s not exactly the case, a new study in the Proceedings of the National Academy of Sciences reveals. Starting in 2011, progress on cleaning up air pollution stalled — and in some places, smog levels actually…

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