Almost 4.1 billion pounds of toxic chemicals were released to the environment in the United States in 2007, according to new data from the E

EPA secrecy about sites' toxic dangers extends even to senators' inquiries

High levels of likely carcinogen found at New Jersey brook that the EPA calls safe for recreational use

A report that top officials of the Centers for Disease Control and Prevention thought was too hot for the public to handle

Boys exposed to higher levels of PCBs scored lower on focus and concentration tests