American Rivers ranks the Tijuana River No. 2 on its list of most endangered rivers. Advocates are urging the U.S. and Mexico ...

An ordinance is expected to be introduced Wednesday. City Hall promised President Joe Biden’s administration that it would change its practice of dumping polluting businesses on low-income Black and ...

The move will give state regulators more time to develop a plan to improve air quality in metro Denver and the region, and to ...

The U.S. Environmental Protection Agency standard is 12 micrograms per cubic meter, and the World Health Organization’s recommended guideline is 5. “Clearly, current EPA air pollution standards are ...