Mountain mining damages streams

The controversial practice of stripping off the tops of mountains to mine coal, long suspected of polluting streams, is guilty as charged, scientists say. On Aug. 3, researchers at the Ecological Society of America conference in Pittsburgh, Pennsylvania, presented what they say is the first conclusive evidence of a direct link between this type of mining and environmental damage. Their research has teased apart the effects of mountain-top mining and urbanization on local water quality in West Virginia, and found that even relatively small mining operations can cause serious harm to ecosystems. "Even at very low levels of mining we found a dramatic impact on water quality and stream composition," Emily Bernhardt, a biologist at Duke University in Durham, North Carolina, and one of the study's lead researchers, told Nature. The scientists have called on the US Environmental Protection Agency (EPA) to tighten the water pollution limits faced by mining companies.