The first Saturday of each month is Science Saturday at the Environmental Discovery Center at Spring Lake Regional Park in Santa Rosa. Families are welcome to stop by and join a Discovery Center naturalist for fun, hands-on activities with a different theme each month. Activities start on the hour at 1, 2, or 3 p.m. Science Saturdays feature tangible experiments and projects that let children explore the world around us. This is a free event. Parking is $7 or free for Regional Parks members.