China's capital city has a long history of water scarcity. In recent years, rapid economic growth, pollution, and a population reaching 17 million have intensified the problem. It is estimated that Beijing's water availability per capita is 30 times below the international average.
- By Niann-Tsyr Yuen
- October 03, 2008
When groundwater flows through underground coal mines, metals and sulfate often leach from pyrite-laced coal and bedrock and discharge into a surface water body, becoming acid mine drainage.
- By Michael von Fahnestock, Ph.D.
- September 24, 2008