Our poisoned world - the top 10 worst pollution problems
24 Oct 2008

Poisoned village water in Ghana.
The "I Trust My Legs" gold mine in Ghana is a local affair, where miners shift silt from rudimentary pits and then combine it with mercury.
The element - a toxic metal that can cause brain damage - captures all the gold in the dirt and then, when the mixture is heated, dissipates into the air, leaving just gold bits behind.
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