Suspending or expelling children from preschool for challenging behavior is surprisingly common. And it happens way more often to Black children, boys, and kids with learning differences than others. A California law restricts the practice at state-funded early education programs, but implementing the law has been hard because of long-lasting impacts of the pandemic – like staffing shortages and learning loss. Reporter: Daisy Nguyen, KQED Two San Diego environmental groups are suing the federal government in an effort to stop cross border sewage flows that endanger the environment and public health.  Reporter: Erik Anderson, KPBS Learn more about your ad choices. Visit megaphone.fm/adchoices