Mashable: If youre sneezing right now, the cause may be on the other side of the planet. In late June, winds began blowing what NASA describes as a river of dust from Africa across the Atlantic Ocean to North and South America.
Because of thermal expansion of the atmosphere around the equator, sand and dirt grains are suspended thousands of feet in the air, as a wind carries them westward.
Though Florida usually gets the heaviest dose of African dust, this year the dust seems to be spreading over...