October 14, 2018, 11am PDT
President Trump announced at a campaign rally in Iowa that he would lift the ban on summertime sales of a 15 percent blend of ethanol, expected to increase smog levels. Both environmentalists and the oil industry oppose the action.
September 9, 2018, 5am PDT
The EPA intends to review the rulemaking process behind the mercury rule, the subject of a landmark Supreme Court ruling in 2015, to place more value on a rule's compliance cost to industry and less to its beneficial impact on human health.
August 27, 2018, 6am PDT
At the center of the EPA's newly proposed Affordable Clean Energy rule is doing away with a permitting process known as New Source Review that requires coal power plants to add scrubbers and other expensive pollution control equipment when upgraded.
August 5, 2018, 5am PDT
On Thursday, the U.S. DOT and U.S. EPA announced one of the Trump administration's most consequential rollbacks of environmental and efficiency regulations that will have a detrimental effect on climate change, air pollution, and oil consumption.
July 25, 2018, 1pm PDT
A New York federal district court rules on a climate change lawsuit like its West Coast counterpart did last month: Don't hold oil companies accountable for climate change and sea level rise. Baltimore and Rhode Island file climate change lawsuits.
July 23, 2018, 10am PDT
Sources leaked news of the Trump Administration's plans to dismantle the Obama-era environmental policies. The Trump Administration also aims to dismantle the Golden State's ability to regulate air pollution from vehicles.
April 24, 2018, 1pm PDT
Despite ever-stricter air-quality regulations and dropping emissions, the American Lung Association once again finds the state to have some of the worst air in the nation.
April 3, 2018, 12pm PDT
EPA Administrator Scott Pruitt announced Monday that his agency is siding with auto manufacturers and relaxing greenhouse gas emission standards for new cars and light trucks.
March 18, 2018, 11am PDT
As a result of a federal court ruling on March 12, the Environmental Protection Administration will be compelled to do what it should have done by October 1: Identify regions of the country where the air quality violates smog standards.
January 31, 2018, 12pm PST
Poor air quality has decimated the health of residents in this predominantly black community ringed by highways.
March 27, 2017, 9am PDT
A legal battle is looming between the nation's two most powerful environmental regulators after the California Air Resources Board on Friday defied President Trump by approving vehicle fuel efficiency standards that Trump has promised to ease.
January 24, 2017, 9am PST
Oklahoma Attorney General Scott Pruitt suggested that as administrator of the Environmental Protection Agency he might not allow California to set its own stricter motor vehicle emissions standards.
January 13, 2017, 11am PST
Similar violation but new player—Fiat Chrysler, accused by U.S. EPA of willfully violating emissions standards for certain models of diesel Jeeps and Ram pickups. The charge comes a day after DOJ settled civil and criminal suits with Volkswagen.
December 27, 2016, 12pm PST
It's not Southern California, with its ports and congested freeways, California's Central Valley, with its bowl-like topography, Houston, with its oil refineries, or the midwest, with its coal power plants. Hint: think Santa Claus.
March 22, 2016, 10am PDT
The South Coast Air Quality Management District is in the news again, this time for going too easy on the region's big polluters—just what staff had warned would happen before the board fired its well-respected executive director.
March 21, 2016, 11am PDT
Expect EPA to be radically downsized and stripped of much of its authority should a Republican become the next president. Democrats haven't stepped up to their defense as one might expect after the mishandling of the Flint water crisis.
February 6, 2016, 1pm PST
Good news for the United States is found in a recent series of maps by NASA. Air pollution has significantly improved around the country.
November 10, 2015, 5am PST
London Mayor Boris Johnson has tabled strict air-pollution controls until 2020 despite evidence of increasing pollution levels in the city's center.
October 15, 2015, 11am PDT
Credit EPA emission regulations for the decisions by utilities to close the aging plants. Michigan receives half its power from coal—the most polluting fossil fuel. The new Clean Power Plan rule will cause more remaining plants to close in time.
October 2, 2015, 10am PDT
The EPA chose to reduce the current standard of 75 parts per billion, unchanged since 2008, by 5 ppb. Public health and environmental groups insist that a safe standard would be 60 ppb, while businesses point to the high costs to comply with 70 ppb.