By the time it floats down from the atmosphere it will have traveled more than 5,000 miles, CNN meteorologist Haley Brink said. While it sounds dramatic, it's actually pretty normal. Right now the cloud is in the middle of the Atlantic Ocean and is expected to drift over the U.S. by next Tuesday, the Houston Chronicle reported. It will most likely sap some of the humidity from the air, the Chronicle said. While its presence is usually innocuous, the dust can irritate people who have respiratory issues, depending on its concentration in the air, the Chronicle said. Saharan dust tends...