Despite clear skies in March, 2020 saw LA's worst smog in decades
POLLUTION: A California official says 2020 was a “really, really bad ozone year” for Southern California despite a 21-day … (Santa Cruz Sentinel)
POLLUTION: A California official says 2020 was a “really, really bad ozone year” for Southern California despite a 21-day … (Santa Cruz Sentinel)
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