Background. Aseptic meningitis is an illness characterized by serous inflammation of the linings of the brain (i.e., meninges), usually with an accompanying mononuclear pleocytosis. Clinical manifestations vary, with headache and fever predominating.
Lake Superior 1  ... is the largest freshwater lake in the world by surface area and the third largest by volume (Lake Baikal in Siberia and Lake Tanganyika in East Africa contain more water). 2  could hold all the water in the other Great Lakes, plus THREE MORE Lake Eries. 11,000 years ago: Glacial Lake Duluth, the precursor to Lake Superior, forms as the ice sheet retreats northeastward. 2  The lake's torrential outflow near present-day Duluth carves the St. Croix River Valley and feeds the Mississippi River.
Climate Change and Lake Superior. With field data in hand and computers crunching numbers, it's becoming obvious that Lake Superior is responding to global climate shifts as clearly as anywhere on Earth. Lake Superior's surface water temperature in summer has warmed twice as much as the air above it since 1980.Per decade since 1980, surface water temperature in summer has increased about 2 Â°F (1 Â°C), while regional air temperature has increased 1 Â°F (0.5 Â°C). , Lake Superior's ice cover is diminishing.ake Superior's surface water temperature in summer has warmed twice as much as the air above it since 1980. Per decade since 1980, surface water temperature in summer has increased about 2 Â°F (1 Â°C), while regional air temperature has increased 1 Â°F (0.5 Â°C). ,