Nature World News: Houston, Texas, is nearly 5,000 miles away from the Sahara desert in Africa, but US researchers have distinguished between dust particles transported from the Sahara across the Atlantic Ocean with dust particles with local sources, effectively identifying a "fingerprint" of the African dust.
The researchers say that to their knowledge, theirs is the first study which isolates, differentiates and quantifies the air contaminants in the US during the incursion of African dust, which happens regularly....