Supreme Court curbs EPA's ability to fight climate change

The Supreme Court curbed the Environmental Protection Agency's ability to broadly regulate carbon emissions from existing power plants, a major defeat for the Biden administration's attempts to slash emissions at a moment when scientists are sounding alarms about the accelerating pace of global warming.

In addition, the court cut back agency authority in general invoking the so-called "major questions" doctrine -- a ruling that will impact the federal government's authority to regulate in other areas of climate policy, as well as regulation of the internet and worker safety.

The decision issued Thursday will send shockwaves across the federal government, threatening agency action that comes without clear congressional authorization.