Recent Bookmarks in Lighter Footstep Tagged With "arkansas"
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What Lies Beneath: Taking Karst Conservation International
http://www.nature.org/wherewework/northamerica/states/arkansas/projectprofiles/art22713.html
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Rated stars out of 5.
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Caves and drinking water: what's the connection? Twelve percent of the Earth's surface is covered by karst terrain -- porous layers of limestone and other bedrock that are often underlaid by thousands of caves. And 25 percent of humanity relies on… More
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