Saturday on PBS News Weekend, a look at the push to raise age limits to buy a firearm amid an epidemic of gun deaths in America. Then, how the devastating decline in Florida's citrus harvest is threatening a way of life. Plus, filmmaker Bernard-Henri Lévy discusses his new documentary about the devastating effects of war in Ukraine and its people's fight for survival. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders