The public is invited to attend free, Saturday programs led by University of Colorado Boulder faculty on popular topics as part of the CU on the Weekend series, which begins Sept. 6. With topics ranging from the sweeping stories behind celebrated musical compositions to the micro-level study of bacteria that uniquely forms each person’s microbiome, CU on the Weekend programs are designed to satisfy the community’s curiosity surrounding some of the intriguing research conducted at CU-Boulder.