Julian Marks 
The Saharan Desert is a massive generator of atmospheric dust, which is transported in massive quantities and deposited up to a few thousand kilometers away by large winds blowing over incredible distances.
Wilderness areas and national parks, particularly in the western half of the United States, are excellent places to observe the night sky.
Cumbre Vieja, a volcano on the island of La Palma, erupted again on September 19, 2021.
More people in the United States are moving from urban areas into more natural landscapes.
El Niño and La Niña are weather patterns that frequently have a considerable impact on the western and southwestern United States.