Elon Musk's artificial intelligence company, xAI, is facing a federal lawsuit accusing it of operating dozens of gas turbines without the permits required under the Clean Air Act, exposing nearby communities to air pollution linked to asthma, heart disease and cancer. The lawsuit, brought by the NAACP alongside Earthjustice and the Southern Environmental Law Centre (SELC), centres on xAI's rapidly expanding data centre in the Memphis area. The c…