Advection fog occurs when warm air moves in over a cooler land surface. This happens often along coastlines, for example, when warm ocean breezes blow in over cooler land. The land cools the warm air below the dew point, and fog forms. Upslope fog occurs when warm air passes over the upward slope of a cool mountain.
Cryptosporidiosis is a diarrheal disease caused by microscopic parasites, Cryptosporidium, that can live in the intestine of humans and animals and is passed in the stool of an infected person or animal. Both the disease and the parasite are commonly known as Crypto..
Neuromyelitis optica, also called NMO or Devic's disease, is a rare yet severe demyelinating autoimmune inflammatory process affecting the central nervous system. It specifically affects the myelin, which is the insulation around the nerves. NMO mainly affects the spinal cord and the optic nerves -- the nerves that carry signals from the eyes to the brain. As a result, the disease can cause paralysis and blindness. Neuromyelitis optica most often strikes during childhood.