Once-vast Aral Sea dries up to almost nothing

October 2, 2014 12:50 PM

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(CNN) -- The Aral Sea was once the world's fourth-largest lake. Now much of it is a vast toxic desert straddling the borders of Kazakhstan and Uzbekistan, two former Soviet states in central Asia.

In recently released images, NASA's Earth Observatory shows the extent of the lake's recession over the past 14 years.

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