When COVID-19 became a worldwide pandemic in mid-March, putting a stop on long-distance travel and reducing dramatically vehicular traffic, we witnessed a direct and significant improvement of our air quality. Photos of unusual blue and clear skies over large metropolitan areas were one of a few things that cheered us up in these dark times. […]
Consider Public Health When Choosing your Commute
![](https://sustainability.wustl.edu/files/2020/08/COVID-19_highway_sign_in_Toronto_March_2020_cropped-350x197.jpg)