Toward the end of September, wildfires raging near Russia’s Lake Baikal lofted thick clouds of smoke that cast a pall over a huge region. Picked up by east-to-west winds, the smoke was blown more than 3,000 miles to the east, all the way out into the Pacific Ocean.
Make sure to check out the animation lower down in this post showing aerosols from the fires drifting east. But first, some background on these fires:
This year brought a large number of particularly intense wildfires to