The following are the Vernon County Over 50 activities for December. For more information, call (262) 384-0082. • 1–1:45 p.m. Monday, Dec. 2 — Tai Chi exercise at Bethel Home Fellowship Hall, 614 S. Rock Ave., Viroqua, the Ontario and Readstown public libraries. • 1–1:45 p.m. Wednesday, Dec. 4 — Tai Chi exercise at Bethel…