谁知道关于environmental issue的相关资料

http://northstar.sierraclub.org/campaigns/air/coal/wrongWithCoal.html
http://www.umich.edu/~gs265/society/waterpollution.htm

Particulates from dirty coal result in deaths to MINNESOTA CITIZENS

A landmark study completed several years ago by Harvard researchers found a 37 percent higher risk of death from cardiopulmonary disease and a 37 percent higher risk of death from lung cancer in cities with the most fine particulate pollution as compared with the least polluted cities, after taking into account personal risk factors, such as smoking.

Oil pollution is a growing problem, particularly devestating to coastal wildlife. Small quantities of oil spread rapidly across long distances to form deadly oil slicks. In this p