Letter: How to keep the air in Utah clean

One of the bright spots in the past few months has been the improved air quality in the Salt Lake Valley, but disturbing news dampens my enthusiasm.According to a report from the National Oceanic and Atmospheric Administration (NOAA), in May, 2020, the amount of CO2 in the air globally hit the highest monthly average value ever recorded at 417 parts per million, up from 414.7 in May of last year.In fact, CO2 levels are the highest they’ve been in human history, and likely the highest in 3