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by NASA-GSFC - digital version copy - © Corbis. All Rights Reserved. - © NASA-GSFC - digital version copy/Science Faction/Corbis
Mississippi River Emptying into the Gulf of Mexico Seen by MODIS
The teal blue area along the Louisiana coastline illustrates a region known as the Dead Zone, an expanse of oxygen-depleted (hypoxic) waters resulting from the delivery of excessive amounts of nitrogen pollution from the Mississippi River. Human activity is largely responsible for the seasonal hypoxia, which now threatens not only the marine ecosystems, but also the livelihoods of those people who rely upon it. --- Image by © NASA-GSFC - digital version copy/Science Faction/Corbis



























