There’s a nationwide baby formula shortage, driven by supply chain issues and recalls. You can’t buy formula in many stores and in California, that's left many parents are scrambling.  Reporter: Cristina Kim, KPBS A federal appeals court has ruled that California’s ban on the sale of semiautomatic weapons to people under the age of 21 is unconstitutional. A panel of the 9th US Circuit Court of Appeals wrote that the law violates the Second Amendment and the right of young adults to bear arms. Reporter: Keith Mizuguchi, The California Report  COVID-19 cases rose 20% last week in L.A. County. County Public Health Director Barbara Ferrer said mask mandates could return if the pace of new cases doesn't slow down. Reporter: Jackie Fortier, KPCC  With roughly 66,000 people across L.A. experiencing homelessness on any given night, there’s renewed interest in the role of corporate social responsibility and charity.  Reporter: Ethan Ward, KPCC  Seal pup season is coming to a close in California. When adult elephant seals leave the beach, pups are on their own as they prepare to live out at sea for months at a time. This means pups must learn to sleep underwater. Reporter: Guananí Gómez-Van Cortright, KQED   Learn more about your ad choices. Visit megaphone.fm/adchoices