CU Museum of Natural History and Facilities Management will be hosting their annual Fall Color Tree Walks on Oct. 12 and 13 at 5 p.m. with arborist Vince Aquino and retired Outdoor Services Director Alan Nelson. Each tour is designed to be unique. Reservations are not required, and all ages are welcome. Participants will see the colorful foliage and learn the distinctive characteristics and historical significance of different trees on CU’s main campus. Meet by the south entrance to the CU Natural History Museum.