Participate in the Martin Luther King, Jr. National Day of Service by joining your community for a creek cleanup along Piner Creek! Trash bags, trash pickers, and gloves will be provided. Wear layers depending on the weather and sturdy, closed-toe shoes. All ages are welcome. Children must be accompanied by an adult. Heavy rain will cancel, but in light rain the work will continue. Monday, January 19, from 1 to 3 p.m. Meet at Piner Creek near 3215 Coffey Ln., Santa Rosa. Register at tinyurl.com/5fpy455b.