Bandshell Boogie 2018 is a free outdoor summer dance series bringing dance back to the public realm on Mondays in downtown Boulder; 7 p.m., Boulder Bandshell, 1212 Canyon Blvd., Boulder; free; bandshellboogie.com.
Bubbles at the Library — Make your own bubble wand, then blow amazing bubbles with your creation. All supplies will be provided. This program is for families. Everyone is welcome; 1 p.m., Louisville Public Library, 951 Spruce St., Louisville; 303-335-4821, louisvilleco.gov.
Boulder Concert Band Concert — Enjoy a relaxing musical evening in one of Boulder's beautiful parks. Bring family and friends and a picnic. Experience a Boulder tradition, sponsored by City of Boulder Parks and Recreation; 7 p.m., North Boulder Park, 2848 9th St., Boulder; free; BoulderConcertBand.org.
Flatirons Chamber Music Festival: Beau Soir — Join a beautiful evening in France through the musical atmospheres of Gabriel Fauré, Darius Milhaud, and Maurice Ravel; 7 p.m., Dairy Arts Center, 2590 Walnut St., Boulder; $12.50-$15; flatironschambermusicfestival.com/beau-soir.
Boulder Tuesday Thursday Hikers — Join a day hike with a drop-in group. The group decides each time where to hike. It will carpool to trailheads, and reimburse the drivers for expenses. Bring lunch, water, and snacks, and be prepared for all weather conditions. This is a leaderless group, and each person hikes at his/her own risk; 8 a.m. Tuesday, North Boulder Park, 7th and Dellwood, Boulder; free; 303-494-8822.
The Life of a Polar Bear — This program covers the remarkable adaptations that allow polar bears to survive in the extreme Arctic environment. Students will get to experience how adaptations, from special fur to unique feet to layers of fat, enabled these sea bears to become the largest land dwelling carnivore in the world. Space is limited; registration is required. Registration opens on June 12. Register for this program, 303-335-4821, email@example.com; 11 a.m. Tuesday, Louisville Public Library, 951 Spruce St., Louisville; louisvilleco.gov.
Children's Dances — There will be folk dancing for children/families outside on the Plaza beside the Dushanbe Teahouse on selected Tuesday evenings. No experience needed — all dances are taugh, a wonderful way for children and families to learn dances from around the world; 6:15 p.m. Tuesday, plaza beside the Dushanbe Teahouse, 1770 13th St., Boulder; free; 303-499-6363, postoley.org/TheNewPostoley.
Nick Arvin: "Mad Boy" — Nick Arvin will speak about and sign his new book, "Mad Boy"; 7:30 p.m. Tuesday, Boulder Book Store, 1107 Pearl St., Boulder; $5; 303-447-2074, boulderbookstore.net/event/nick-arvin-mad-boy.
George Lakoff — Renowned linguist George Lakoff talks about how to effectively communicate to progressives and moderates and how childhood experiences form political consciousness. Video of Lakoff, followed by discussion. Lakoff is the Richard and Rhoda Goldman Professor of Cognitive Science and Linguistics at the University of California at Berkeley; 6 p.m. Wednesday, Boulder Public Library, 1001 Arapahoe Ave., Arapahoe Room, 2nd floor., Boulder; free.
Larry Burk: "Dreams That Can Save Your Life" — Larry Burk will speak about and sign his new book, "Dreams That Can Save Your Life: Early Warning Signs of Cancer and Other Diseases"; 7:30 p.m. Wednesday, Boulder Book Store, 1107 Pearl St., Boulder; $5; 303-447-2074, boulderbookstore.net/event/larry-burk-dreams-can-save-your-life.
Katie Costello — Rebel Pop artist Katie Costello will be performing her unique brand of indie pop, with tracks from her new album "Twice the Love"; 8 p.m. Wednesday, The Laughing Goat, 1709 Pearl St., Boulder; free; katiecostellomusic.com.