xAI’s gas turbines get official approval from Memphis, Tennessee, even as civil rights groups prepare to sue over alleged Clean Air Act violations.

President Donald Trump’s budget would kill off tax credits for wind and solar, raising costs for new clean energy projects and blowing up valuable investment in those already in the pipeline.

A growing body of research attempts to put a number on energy use and AI—even as the companies behind the most popular models keep their carbon emissions a secret.