The pandemic’s cleaner air could reshape what we know about the atmosphere

Washington • In the crystalline air of the pandemic economy, climate change researchers have been flying a small plane over Interstate 95, from Boston to Washington, measuring carbon dioxide levels. Scientists have mounted air quality monitors on Salt Lake City’s light rail system to create intersection-by-intersection atmospheric profiles.And government scientists at the National Oceanic and Atmospheric Administration have started a COVID air quality study to gather and analyze sampl