A week of events in Cambridge and Somerville from a rib fest and Ignite to canoemobile trips

Thursday, Sept. 25

Agua, Sol y Sereno

The Agua, Sol y Sereno art collective is in residency at the Harvard Museum of Natural History in Cambridge.

Gallery Talk: German Drawings from the Busch-Reisinger Museum in “Sketch, Shade Smudge” from 12:30 to 1 p.m. at the Harvard Art Museums, 32 Quincy St. , near Harvard Square, Cambridge. Free. Curator Lynette Roth explores works by Lotte Laserstein, Max Beckmann, Erwin Spuler and Willi Baumeister. This exhibition celebrates the act of drawing using charcoal, chalk, crayon and graphite.

“P’alante: Stories Moving Somerville Forward” film screening from 4 to 6 p.m. at Somerville Public Library, 79 Highland Ave. , Central Hill. Free. This 20-minute film, a photo project by local photographer Mario Quiroz, is screened at 4 and at 5 p.m.,