Sera Segal-Alsberg wears a mask designed to filter out airborne particles during a Los Angeles smog alert.

California regulators opened an investigation Thursday to consider penalties against Southern California Gas Co. for a massive 2015 natural gas leak blamed for sickening thousands of nearby residents and forcing them from their homes. The California Public Utilities Commission made the decision…

If California is serious about fixing its housing challenges, it should wean its cities off the sales tax gravy train. Until local municipalities are properly motivated to build, not much will change. And the only persuasion that makes cities jump is cash. Currently, cities are addicted to boosting sales tax collection because it’s about the…

An Iraqi general whose forces partnered with American troops during a 2017 U.S. deployment to Mosul was shown in video testimony Thursday, June 27, saying he was at a teen ISIS fighter’s side and never saw Navy SEAL Edward “Eddie” Gallagher do anything but try to save the boy’s life. Gallagher is on trial for…

Immigrant activists and many leaders of government agencies in Southern California expressed relief Thursday when the U.S. Supreme Court issued a ruling that at least temporarily blocks the Trump administration’s plan to ask residents about their citizenship status on the 2020 Census. But others who favor a citizenship question on the census were frustrated by…

The Securities and Exchange Commission has filed a complaint against a Santa Ana businessman accused of using YouTube and paid Vietnamese-language television to lure people into what authorities describe as a $2.4 million investment scam. Richard Vu Nguyen, also known as Nguyen Thanh Vu, is accused of misappropriating roughly $600,000, lying about his credentials and…

LOS ANGELES – Air quality samples collected near the Aliso Canyon natural gas storage facility during the 2015 blowout that led to the largest-known human-caused release of methane in U.S. history showed elevated levels of pollutants known or suspected to be associated with serious health problems, according to a UCLA Fielding School of Public Health-led…

The AES power plant in southeast Long Beach is building its way toward a more sustainable future for Southern California, according to its officials. Executives from the company joined city officials at the plant on Thursday, June 27, to break ground on the property’s next big project: A battery storage facility the size of a…

It was 1951 in Mexico City, and George Rosenkranz and two colleagues were hard at work creating a synthetic hormone they hoped would help prevent pregnant women from having a miscarriage. Their work, though, was far more profound than any of them initially realized. The hormone they were tinkering…

A magnitude 3.0 earthquake was reported Thursday afternoon at 1:50 p.m. Pacific time in Ontario, Calif., according to the U.S. Geological Survey. The earthquake occurred less than a mile from Eastvale, one mile from Jurupa Valley, two miles from Fontana and three miles from Rancho Cucamonga. In…