Climate

Despite decades of progress in reducing air pollution, Los Angeles is still the nation’s smoggiest city, according to a report released Wednesday by the American Lung Assn. The association’s annual …

A former oil executive and representative of Elon Musk’s Department of Government Efficiency team has been given wide authority to make significant changes to the Department of Interior, the agency …

U.S. EPA Administrator Lee Zeldin on Tuesday called for Mexico and the U.S. to develop a “100% solution” to stop the flow of raw sewage from Tijuana that has polluted …

Donald Trump announced his first run for president on June 16, 2015. He lashed out against Mexican immigrants, environmentalists and other supposed enemies foreign and domestic. Two days later, Pope …

DETROIT — Arborists are turning vacant land on Detroit’s eastside into a small urban forest, not of elms, oaks and red maples indigenous to the city but giant sequoias, the world’s largest …

Nearly 2 million California rooftop solar owners could lose the energy credits that help them cover what they spent to install the expensive climate-friendly systems under a proposed state bill. …

SISKIYOU COUNTY, Calif. — In far Northern California, beneath a towering mountain ridge still covered in April snow, one of the state’s last cowboys stood in the tall green grass of a …

NEW ORLEANS — Fifteen years after the Deepwater Horizon oil rig exploded off the Gulf of Mexico, killing 11 people and sending 134 million gallons of crude gushing into the ocean, the …

ISLAMORADA, Fla. — The Everglades are more than just swamps, fan boats and alligators, and restoration efforts affect more than the land between Florida’s east and west coasts. Florida Bay, a body …

L.A.’s fragile urban canopy was dealt a vicious blow this weekend when a chainsaw-wielding vandal cut down a number of shade trees along South Grand Street and other areas of …