As President Trump dismantles the country’s efforts to fight climate change, environmental groups are back on their heels.

The city is racing to put up 277 sensors. Once installed, Chicago will have the most high-quality air monitors in the country ...

The California Air Resources Board is continuing to enforce “stringent emission standards” for trucks despite President Trump’s congressional resolutions in June invalidating the EPA’s preemption ...

The California Air Resources Board is continuing to enforce “stringent emission standards” for trucks despite President ...

Former NHTSA Administrator Ann Carlson says losing the endangerment finding could help California regulate vehicle emissions.

Less than a year after Western Australia's environmental watchdog was stripped of its powers to assess the emissions of some of the state's most highly polluting projects, environmental advocates and ...

The lawsuit seeks to block the Trump administration from repealing the legal foundation for regulating climate pollution.

The Justice Department is suing California in an effort to block the state's enforcement of emissions standards for trucks. Why it matters: It's the latest battle between President Trump and ...

The Department of Justice (DOJ) is looking at state laws with “out-of-state economic impacts” that could hinder the national economy and interstate commerce. “Today, the Justice Department ...

The Justice Department said it has filed two complaints against the California Air Resources Board regarding the state's emission standards implemented through a partnership with heavy-duty truck and ...