blog posts Enormous dust cloud arrives in U.S., blanketing the south Jun 30, 2020 11:00 am by The Great Courses DailyIllinois in the News Share on Facebook Tweet Email Images Great Courses Daily (June 30) It has traveled 5,000 miles from North Africa. The cloud’s origin in drought and poor farming practices is reminiscent of that of the 1920s Dust Bowl in the U.S., says atmospheric sciences professor Eric Snodgrass. Share on Facebook Tweet Email