A pair of NASA satellite images comparing water flow along the Mississippi River this month with August 2011 illustrates the effects of a severe summer drought along the critical waterway. The recent photo, taken just south of Memphis, Tennessee on Aug. 8, reveals extensive sandbars that are newly exposed or far larger than they were a year ago.
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Mississippi River
The 2010 BP oil spill hastened the loss of Louisiana’s already fragile salt marshlands, a new study says.
In a comparison of erosion rates at three healthy marsh sites and three areas affected by the oil spill, University of Florida scientists found that oil from the spill coated thick grasses on the outer edge of some wetlands, killing off salt marsh plants 15 to 30 feet from the shoreline.