
Is this really so hard to believe? After all, the same happened with other pollutants
Thanks to the transition to nat gas, cleaner vehicles & other changes, between 1980 and 2018:
– lead pollution declined 99%
– SO2 declined 91%
– CO declined 83%
– NO2 declined 61% pic.twitter.com/po3s4hOTyn— Michael Shellenberger (@shellenberger) June 21, 2020
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