Smoke from the massive wildfires scorching the Golden State is drifting across the USA and has been reported as far east as New England, NASA said. 
In addition to ash and smoke, the fires release carbon monoxide into the atmosphere, a dangerous pollutant that can persist in the air for about a month and be transported great distances.
NASA said that in recent weeks, carbon monoxide has been reported high in the atmosphere across the country; one branch is moving south toward Texas and the other is forking to the Northeast.
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