May 5, 2015, 11am PDT
Home builders fear bans on connections of homes to water systems, issued from the state and cities, will increase next month when Gov. Jerry Brown's new water mandates take effect June 1.
April 13, 2015, 8am PDT
With $60 million in contributions, half from from the former mayor of New York, Michael Bloomberg, the Sierra Club will embark on one of its biggest campaigns: close half of the nation's coal power plants by 2017. Plus, a new coal rule goes to court.
April 6, 2015, 1pm PDT
A U.S.EPA list ranks the cities leading the nation with the most energy efficient commercial buildings.
March 9, 2015, 8am PDT
Manufacturers say yes, arguing that the reduction in vehicle crashes decreases traffic congestion. Other features improve traffic flow. But these are safety technologies, not emission-reducing measures, that critics worry will water-down CAFE.
March 9, 2015, 7am PDT
Too often we report on new studies showing how air pollution worsens public health, often causing premature death. For a change, here's a study showing how efforts to improve air quality in Southern California have boosted public health in children.
January 29, 2015, 8am PST
With the turnover of leadership in the Senate to Republicans in January, the only Keystone question was whether advocates had enough votes to override a promised presidential veto. Turned out they were unable to overcome the first filibuster of 2015.
January 15, 2015, 10am PST
President Barack Obama hopes to add to his "climate legacy" by having the EPA adopt the nation's first regulations to reduce methane emissions, the second most prevalent greenhouse gas emission after carbon dioxide, but far more powerful.
January 13, 2015, 8am PST
Waste-to-energy plants, or incinerators, are classified as renewable power plants by the EPA. A controversial Baltimore plant is under construction as well. More common in Europe, they may be catching on stateside due to low recycling rates.
December 28, 2014, 11am PST
Six years after one of the worst environmental disasters in U.S. history, the EPA adopted a rule to regulate a byproduct of coal power plants. The new regulation puts coal ash in the same category as household garbage, disappointing many activists.
December 14, 2014, 11am PST
Arguably just as important than the sales of new vehicles, e.g., hybrids and EVs, are the consequences of not buying new cars.
November 27, 2014, 7am PST
The top court's decision on Tuesday to review the first-ever regulation of mercury is a setback for Obama's environmental agenda, in part because it has implications for other EPA initiatives including Wednesday's proposal to tighten the ozone rule.
November 11, 2014, 6am PST
Rolling back the U.S. Environmental Protection Agency's tough climate regulations could be the first of many new energy and environmental goals for the GOP majority of the 114th Congress.
October 28, 2014, 8am PDT
The high desert city of Lancaster in northern Los Angeles County has an innovative plan to reduce its homeless population: Close its Metrolink station, the last stop on the Antelope Valley line, that serves 400 commuters daily.
October 9, 2014, 1pm PDT
According to the Center for Biological Diversity, toxic wastewater from oil industry fracking operations has been illegally injected into Central Valley disposal sites, posing a threat to water supplies of nearby residents.
August 4, 2014, 5am PDT
Thinking about "renewable power" often bring hydroelectric, wind, and solar to mind. The informed will recognize geothermal and biomass as major renewables. Biogas, the non-fossil natural gas, is not well known because few facilities capture it.
June 23, 2014, 11am PDT
In a 5-4 decision on June 23, the Supreme Court ruled that EPA erred in the permitting processes for new carbon-cutting rules. However, most of the Clean Power Plant rule that reduces emissions 30 percent will not be affected.
June 15, 2014, 7am PDT
Ben Schiller reports on two new air quality sensors that show you pollution comparisons of the air you are breathing right now.
June 7, 2014, 11am PDT
EPA's new Clean Power Plan Rule has taken on a political life of its own, with coal states adamantly opposed, helping those who allege that the administration is waging a "war on coal." We also look at the basis of the rule in the 1970 Clean Air Act.
June 3, 2014, 5am PDT
EPA Administrator Gina McCarthy announced on Monday the long-awaited proposed rule to reduce the largest source of carbon dioxide emissions. It calls for cuts of 30 percent by 2030, with the baseline year of 2005, to be finalized next year.
May 31, 2014, 1pm PDT
Both sides are coming out swinging, days before President Obama and EPA Administrator McCarthy release a long-awaited power plant rule on Monday. The U.S. Chamber of Commerce released a new report concluding the rule would cost $50 billion annually.