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18 April 2012
When populations expand, the demand for fresh water rises. And over the past two decades, population growth has contributed to a 6 percent decline in worldwide surface water, according to a new study.
15 October 2010
Guest post by Anne Jefferson, assistant professor at the Department of Geography and Earth Sciences, UNC Charlotte, and science blogger at Highly Allochthonous In August 2009, unusually heavy rains lasting six hours deluged the city of Khartoum in Sudan. Higher, wealthier parts of the city were relatively unaffected, but in the vast shanty towns that surround the city center, people lost their possessions, homes, and lives. Twenty-seven people died, and …