Denver experiences what is known as a brown cloud, so a layer of smog over the city, caused by weather patterns and local sources of pollution, including transportation.
Joe Neguse: “Denver experiences what is known as a brown cloud, so a layer of smog over the city, caused by weather patterns and…”
On the recordJuly 15, 2019
Source
congress.govEditor's note · Context
Neguse describes Denver's air quality issues linked to transportation pollution.
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