The Survivor Tree is a symbol of strength to all of OKC. The towering, 100-year old American elm inside the Oklahoma City National Memorial & Museum witnessed the tragedy of the Alfred P. Murrah Federal Building bombing in 1995 but, like we all did, persevered. Learn about the landmark at the Brown Bag Lunch Speaker Series noon-1 p.m. Thursday at Myriad Botanical Gardens, 301 W. Reno Ave. Admission is free. Call 445-7080 or visit myriadgardens.org.