New U.S. air pollution rules rankle health groups

By Deborah Zabarenko, Environment Correspondent

WASHINGTON, Sept 21 (Reuters) - The U.S. government approved new air pollution standards on Thursday, promising "cleaner air to all Americans," but health and environmental groups said the revised rules are too weak to protect against lung disease and other pollution-related ailments.

Meanwhile, groups that represents U.S. electric power companies -- one key source of the particle pollution addressed by the standards -- ...