Sept. 22–Oct. 2. Almost 2-week-long tech festival, with pitch competitions, a hackathon (two days of intensive coding), talks, panel discussions, a career fair, start-up demos, workshops, networking events, and more. Various times & locations. A mix of free and ticketed events. See full schedule at a2tech360.com.

Bike ride to raise funds for ALS research from Spartan Stadium in East Lansing or from Stockbridge to Michigan Stadium in Ann Arbor. Riders and their bicycles are transported from Ann Arbor to East Lansing for the ride back to Michigan Stadium. A half-ride is also available. Lunch provided at the halfway point in Stockbridge. 6:30 a.m., bus leaves from Pioneer High School. $85 ($40 for half-ride participants who don’t need transportation). Preregistration required at activeagainstals.org/rivalryride.

Leslie Science & Nature Center staff show live animals TBA. Also, animal-oriented hands-on activities for all ages. Noon–3 p.m., 220 E. Ann. $16 museum admission (babies under 2, free). (734) 995–9439, discoverscienceandnature.org/aahom.

Art show and sale in a garden. Proceeds benefit the Ann Arbor Art Center’s public art program. Noon–5 p.m., 1227 Lutz. Free admission. [email protected]. 

Sept. 27–Oct. 3. A week of speeches, forums, fairs, and more. Today’s Harvest Fest includes music, games, food, and farm tours. 1–4 p.m., Matthaei Botanical Gardens, 1800 N. Dixboro Rd. Complete calendar at climateweek.umich.edu/calendar.

Film screenings every day. Tickets $11.75 unless otherwise noted (children under 12, students, seniors age 65 & older, and U.S. veterans, $9.75; Marquee Arts members, $8) in advance online (recommended) & at the door. For updated schedule, see marquee-arts.org/calendar. 

Sept. 27: “The Lord of the Rings: The Two Towers” (Peter Jackson, 2002). Extended version of this fantasy sequel in which hobbit Frodo Baggins and his loyal companion Sam continue their quest, aided by the treacherous Gollum. 1:30 p.m.

MSU ecology professor Jeremy Hartsock leads a hike to learn the basics of moss and liverwort field identification using a hand lens and patterns of moss ecology. 2–3:30 p.m., Eddy Discovery Center, 17030 Bush, Chelsea. $2 (families, $5); preregistration required at [email protected] (include name, phone number, and number of attendees). $15 Michigan recreation passport ($20 at the gate) required.

Family-friendly 5K road race and 1-mile fun run, along with a tot sprint (3:15 p.m.). Also, lawn games, inflatables, and other activities. A fundraiser for pediatric brain cancer research. Virtual 5K available. No dogs. Entry fee includes a T-shirt. 2:30 p.m., Saline Hornet Stadium, Saline High School, 1300 Campus Pkwy., Saline. $30 (1-mile), $10 (tot sprint for age 5 & under), $35 (5K); after Sept. 2 fee goes up by $5. Preregistration required at chadtough.org/runtough.

Outdoor performance by this high-energy pop-folk duo from Minneapolis whose sound incorporates bluegrass, Americana, and indie-folk influences. 3 p.m., Knight Rd. (address provided upon registration). Preregistration required at knightroadhouseconcerts.org or email [email protected]. $30 suggested donation via Venmo or at the door.

(See preview) Pianist and U-M music professor Matthew Thompson accompanies U-M voice students and alumni singers in a program of traditional Korean songs that set a poem or text to music in a way that mirrors classic European art songs. Followed by a guest performance of Korean art songs by world-renowned Korean soprano Sumi Jo. The concert celebrates the first time that Korean song performance has been taught at U-M. 4 p.m., Hill Auditorium. Tickets $11–$25 in advance at smtd.umich.edu & at the door. (734) 764–0583.

Local pianist Kathryn Goodson is joined by a group of string musicians in Schubert’s 1819 “Trout Quintet,” which includes variations on his successful song “Die Forelle.” Also, Ralph Vaughan Williams’ lavish Piano Quintet in C Minor. With double bassist Gregg Emerson Powell, violist John Madison, violinist Sonia Lee, and cellist Thor Sigurdson. 4 p.m., 415 N. Fourth Ave. Tickets $32–$42 (students, $20–$30) in advance at kerrytownconcerthouse.com & at the door. (734) 769–2999.

Strolling appetizer and cocktail hour with live music TBA, followed by dinner served in the farm hoop house prepared by Zingerman’s Roadhouse chef Bob Bennett. 5–8 p.m., Growing Hope Urban Farm, 922 W. Michigan Ave., Ypsi. $150 in advance only at givebutter.com/chefs2026.  

Now in its 10th year, this showcase of local and regional jazz acts features free concerts Saturday and Sunday. Also, on Saturday at 2 p.m., a free jazz improv workshop aimed at teens (sign up at a2jazzfest.com). Tonight: the Elvin Sharp Quartet (6 p.m.), a young jazz ensemble, led by tenor saxophonist Sharp, that plays funky original compositions along with classics from the hard-bop and post-bop catalog. The Alex Hoberty Quintet (7:30 p.m.), a young jazz ensemble led by bassist Hoberty, an MSU jazz studies student. Junk Jazz (9 p.m.), a Detroit experimental jazz trio which has influences as varied as funk, punk, and Brazilian. Rabbit Hole (Sat.), 608 E. William, & Ravens Club (Sun.), 207 S. Main. Tickets $50 (Fri.) & free (Sat. & Sun.). Donations accepted. (734) 769–2999, a2jazzfest.com.

Experienced improvisers compete by improvising songs with live accompaniment. Followed at 7:30 p.m. by a pay-what-you-want Musical Improv Jam: All invited to sing or move in musical/comical improv games and exercises led by a facilitator and accompanist. No experience required. Spectators welcome. 6:30 p.m., 2350 W. Liberty. $15 in advance at heardotsay.com/events & $18 (if available) at the door.

A performance by Diamond, the stage name of Shara Nova, a Detroit-based multi-instrumentalist and singer-songwriter who plays an avant-garde blend of opera, cabaret, chamber music, and rock. Age 12 & up. 7:30 p.m., 100 Market Pl., Ypsi. Tickets $5 (additional donation appreciated) in advance at ums.org/season/2026-27-season & (if available) at the door. (734) 764–2538.

Film screenings every day. For updated schedule, see marquee-arts.org/calendar. 

Sept. 28: “Coalition” (Patrick Kirby, 2026). World premiere of a documentary film about the overharvesting of horseshoe crabs, whose blue blood is a critical component in the development of new drugs and vaccines. Followed by a panel discussion and Q&A with U-M chemistry professor Tim Cernak, an Eli Lilly representative, and environmentalists TBA. FREE, but preregistration requested at marquee-arts.org/calendar. Part of U-M Climate Week (see 27 Sunday Event listing). Doors open at 3:45 p.m. for a 4:30 p.m. screening.