WEDNESDAY “Practice World Peace,” yoga for all ages and abilities, led by Brenda Star Walker, 11 a.m.-noon, Memorial Park, Riverside. Bring a blanket. Free. (904) 699-5172. America’s Wars and Amelia Island, noon, Amelia Island Museum of History, 233 S. Third St., Fernandina Beach. Speaker is Jim Longacre, local historian, with a journey through these various conflicts and how they crafted the island we love today.