Seattle enshrouded in wildfire smoke
From the Watch Now: Sunken ship discovered in Mississippi River, and more of today's top videos series
Wildfires burning in Oregon and Washington have caused smoke and hazy air to cover the Pacific Northwest. In Seattle, the poor air quality made it hard for people to breathe on Oct. 20.
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A centuries-old sunken ship has been the latest discovery in the receding Mississippi River,…
