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Green Car Congress
Jul 14, 2020, 4:00 am340 ptsThe US Environmental Protection Agency (EPA) is proposing to retain, without changes, the existing, more stringent 2015 National Ambient Air Quality Standards (NAAQS) for ozone. The standards, established in 2015, are currently set at 70 parts per billion (ppb), in terms of a 3-year average of the annual…
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Leaf through planet Earths environmental headlines in one convenient place. Read, share and discover the latest on ecology, science and green living from the web's most popular sites.