In a look ahead at a week of Cambridge and Somerville events, there’s a weeklong Cambridge Science Festival, the Honk! Festival of Activist Street Bands, 43rd Annual Oktoberfest, Grolier Poetry Book Shop 95th Anniversary Festival and much more.

In a look ahead at a week of Cambridge and Somerville events, there’s a Bob Moses MathTrail Launch and Parade; “Emotive Land” augmented-reality performance and other dance debuts; a beery class on how to make a New York Times crossword; “Smoke This” Rib Fest; readings, concerts, theater and much more.

In a look ahead at a week of Cambridge and Somerville events, there’s an exhibit of the art of Abraham Megerdichian, a concert by Mario Gotoh and the Finnish sisters known as Kardemimmit, poetry by Joshua Bennett, book readings and theater and “Sacred Songs and Rituals” with Yacouba Sissoko.

In a look ahead at a week of Cambridge and Somerville events, art exhibits such as “Dare to Know” and “Sanctuary City” begin, comedians and advice-givers hold shows, “T: An MBTA Musical” returns and there’s a flurry of festivals and parties from Danehy Park Family Day to Dance Happens Here for the 30th anniversary of the Dance Complex.

In a look ahead at a week of Cambridge and Somerville events, there’s a talk with Nobel Prize laureate Wole Soyinka, visit from vile comedian Neil Hamburger, naughty flutists, a Peter Valentine memorial, the Cambridge Carnival and a number of smaller, end-of-summer festivals and other cultural events.

In a look ahead at a week of Cambridge and Somerville events, there’s festivals of comedy, hip-hop and Somergloom, plenty of theater and dance, and everything from a Moth Story Slam to a monarch butterfly release celebration.

In a look ahead at a week of Cambridge and Somerville events, there’s plenty of music (including new Sol Y Canto and Clem Snide) and theater (including the hip-hop musical “Come to Pass” and a production of “Eurydice”), and a return of the Evolution of Hip-Hop Festival, Floor Lords Breakdancing and MIT Swapfest, as well as bubbles and mini-horses.

In a look ahead at a week of Cambridge and Somerville events, there’s the four-day Nice music festival, two-day Cambridge Jazz Festival, dance, poetry, art in a museum (by day and night) and by bike, storytelling, movies and comedy.

In a look ahead at a week of Cambridge and Somerville events, there’s a Sidewalk Poetry reception and reading, “Suite Talk’ dance piece, Asian American Playwright Collective Playfest, the annual Salsa Squared event, family-friendly “Yellow Bird Chase” at Starlight Square and plenty more music, poetry, literature and art.

In a look ahead at a week of Cambridge and Somerville events, there’s a Frederick Douglass Community Reading but also a Smut Slam (and male dance revue), a Family Game Night but also a look at “True Stories of Grifters, Killers, Rebels and Crooks,” lots of music and poetry, a free screening of “Spider-Man: Into the Spider-Verse” and historical tours.