Saturday on PBS News Weekend, the latest after a gunman killed three Black people in a racially motivated attack in Jacksonville, Florida. New research reveals a genetic variation that increases the risk of Parkinson's disease in people of African descent. We look at how climate change is disrupting the global food supply. Plus, how American sunscreen stacks up against the rest of the world. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders