Martian dust storms are formed when solar heating warms the Martian atmosphere and causes the air to move, lifting dust off the ground. The chance for storms is increased when there are great temperature variations like those seen at the equator during the Martian summer. See also
Coccidioidomycosis
Dry line
Dust storm warning
Haboob
Iberulites
List of dust storms
Mineral dust
Saharan Air Layer
Shamal (wind)
Sirocco

References
External links

12-hour U.S. map of surface dust concentrations Mouse-over an hour block on the row for Surface Dust Concentrations
Dust in the Wind Archived 2020-04-16 at the Wayback Machine
Photos of the April 14 1935 and September 2 1934 dust storms in the Texas Panhandle hosted by the Portal to Texas History. University of Arizona Dust Model Page
Photos of a sandstorm in Riyadh in 2009 from the BBC Newsbeat website
Dust storm in Phoenix Arizona via YouTube
Not sharing also applies to towels, because, though less common, fungi can be passed along on towels, especially damp ones. Treatment
Athletes foot resolves without medication (resolves by itself) in 30–40% of cases. Topical antifungal medication consistently produces much higher rates of cure.Conventional treatment typically involves thoroughly washing the feet daily or twice daily, followed by the application of a topical medication. Because the outer skin layers are damaged and susceptible to reinfection, topical treatment generally continues until all layers of the skin are replaced, about 2–6 weeks after symptoms disappear. Keeping feet dry and practicing good hygiene (as described in the above section on prevention) is crucial for killing the fungus and preventing reinfection. Treating the feet is not always enough. Once socks or shoes are infested with fungi, wearing them again can reinfect (or further infect) the feet. Socks can be effectively cleaned in the wash by adding bleach or by washing in water 60 °C (140 °F). Washing with bleach may help with shoes, but the only way to be absolutely certain that one cannot contract the disease again from a particular pair of shoes is to dispose of those shoes.To be effective, treatment includes all infected areas (such as toenails, hands, torso, etc.). Otherwise, the infection may continue to spread, including back to treated areas. For example, leaving fungal infection of the nail untreated may allow it to spread back to the rest of the foot, to become athletes foot once again.