... spewing mercury, the toxic heavy metal that settles in water and makes its way into the food chain by contaminating fish ... invasive species wreaked havoc of their own. Removing mercury from U.S. chlorine production could be another such example. When the Erco Worldwide ... convenient tool for extracting gold from sediment or rock, used by both large corporate gold mines and Third World ...

... bucket, carry it to the creek to rinse it, and then swirl the sediment around until the mercury settled in the bottom. In 2003, tribe ... cane crops, for instance -- that traces have been found in water outside farming communities. The European Union has banned ... tribal land and there are no signs. "They fish without knowing what's in the water," she says. Indeed, that afternoon, a dozen ...