5 p.m., Tuesday-Wednesday, Oct. 2-3 The CU Museum of Natural History and CU Facilities Management—Outdoor Services groups are teaming up to host two free tours of Boulder's unique and historic campus forest. The tours will meet at the south entrance of the museum (Henderson Building, near UMC) at 15th and Broadway and will be led by the always-enlightening and entertaining, 25+ year veteran and Senior Grounds Specialist, Alan Nelson (a.k.a. Tree Man).