• Kris Light will lead a free fall wildflower walk at Haw Ridge Trails from 9-11 a.m. Saturday, Sept. 2. And the UT Arboretum Society will host a “meet and greet” before the walk. Light is a naturalist, educator and photographer. Info: 865-483-7277.
  • Einstein Simplified, a comedy improv troupe, entertains each Tuesday at 8:15 p.m. at Scruffy City Hall on Market Square.