Environmental advocates are cautiously optimistic after the Supreme Court left California’s nation-leading auto emissions standards in place — at least for the moment. The Supreme Court ...

The Supreme Court said on Friday that it would hear a case that tests that assertion in the context of a state that imposes tougher clean air standards than the federal government. In this case, the ...

Under a provision of the Clean Air Act that was enacted in 1967, California was explicitly allowed to set its own motor vehicle emissions standards because of the unique pollution problem in the ...

California banning new gas-powered cars by 2035 04:11 The U.S. Environmental Protection Agency on Wednesday granted California its request to enforce vehicle emissions standards stricter than ...