Climate Changed
Your Air Isn't Getting as Clean as the EPA Said It Is
- Gains in curbing U.S. air pollution slowed after 2011
- New findings show it’s harder to cut health-threatening smog
Fighting Climate Change, Without the U.S.
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Your air isn’t getting as clean as the government has been telling you, according a report published Monday in the Proceedings of the National Academy of Sciences.
After decades of gains in cutting U.S. air pollution, progress unexpectedly stalled in 2011. After that, levels of nitrogen oxides in the air declined by 1.7 percent annually through 2015, according to the report, a sharp contrast to previously published Environmental Protection Agency data that estimated the decrease at 5.3 percent a year