Probably not so much BS as obscure science. You'd be suprised how dust get's around.
NPR has a tendancy to be Pro-Environment, far Left opinionated. This isn't all bad, IMO if it wasn't for PBS and the activism in the 70's lake Erie would still be burning. Still...too far left is poor balance.
I drove though Nebraska Fri night. Dust storms. Wind was a 40-50mph cross wind. Sometimes you couldn't see the truck in front of you out 5 car lengths. When I drove through again Tuesday, I could see why. Poor soil managment. Many fields were corn and were recently planted. No trees, so no natural wind barriers to prevent the top soil from blowing off to the neighbors field. No Jeeps, just poor managment of resources.