In a look ahead at a week of Cambridge and Somerville events, there’s an Illuminated Block Party, “Rocky Horror,” a Poetry Brothel and lots of other Halloween fun, Roxane Gay and Dallas Goldtooth, the Thrill Kill Kult and the exhibit “Day One DNA: 50 Years in Hiphop Culture.”

In a look ahead at a week of Cambridge and Somerville events, plant a Miyawaki Forest in Somerville, take in a “Dark Exhalation” of sci-fi opera or Sleeping Weazel’s Experimental Cabaret, celebrate Yuck Fest, eat a foraged banquet, hear the “Confessions of a Candy Snatcher” and gasp at Cirque of the Dead.

In a look ahead at a week of Cambridge and Somerville events, there’s the Honk! festival of activist street bands and Oktoberfest in Harvard Square, Devendra Banhart and Eugene Mirman, Kristen Emack talking about her “Cousins” photos and the arrival of “Sweeney Todd” in a new theater.

In a look ahead at a week of Cambridge and Somerville events, there’s the Cambridge Science Festival and carnival, the start of the Honk! festival of activist street bands, Central Square Dumpling Festival and “Smoke This” Rib Fest, Ashley Judd for Ms. Magazine and Walter Isaacson for “Elon Musk” and much more.

In a look ahead at a week of Cambridge and Somerville events, there’s Cambridge Science Festival doings, the annual Fluff festival, clown class, Black Biz, roller disco and John Coltrane from the Cambridge Jazz Foundation.

A week of events in Cambridge and Somerville, from drunken Shakespeare to stoned comedians, foraging walks to “Fungi and the Coming Pandemic,” Horror Movie Science and an artist-magician at the The MIT Museum.

In a look ahead at a week of Cambridge and Somerville events, there’s Wayne Newton, Zadie Smith and Naomi Klein, the Cambridge Carnival, Boston Fuzzstival and Somerville Toy Camera Festival, close-up magic and MIT games, arepas and beer, basketball gods and Kristen Emack photography.

A week of events in Cambridge and Somerville, from Passim’s Campfire Weekend to large walking puppets to Wayne Newton at the 98th Annual Italian Feast of Saints.

In a look ahead at a week of Cambridge and Somerville events, there’s a Hot Girl Cypher, a tour that maps feminist Cambridge, Cara Fitzpatrick discussing “The Death of Public School,” free kayaking on the Charles, a Ifeanyi Menkiti memorial poetry reading, butterfly release party and the play “Forgive Us, Gustavito!”

In a look ahead at a week of Cambridge and Somerville events, there’s a “Yart Sale” and Fashion Extravaganza, poetry readings and music performances, free open-air movie screenings and a festival of one-act plays about “Myths & Legends.”