Poetry Heat Wave! The 2017 Boston Poetry Marathon from 7 to 11 p.m. Friday; noon to 10:30 p.m. Saturday (with a break at 5:45 p.m.); and noon to 6 p.m. Sunday at Outpost 186, 186.5 Hampshire St., Inman Square. Free.

The list of poets signed up to read at this 17-hour event goes on and on and on, reaching around 100, but it’s a fast-moving, eclectic event – each poet gets only eight minutes on stage. A schedule and other information is here.

Thorpe Street Block Party from 1 to 5 p.m. Saturday on Thorpe Street, in the Prospect Hill neighborhood of Somerville. There is a $10 suggested donation.

There’s music from Sur5ILL (above), Tyler Allan, The Sitters, Ohboi, TheLastGekko and DJ JC; games;  face-painting by Aziza Robinson-Goodnight; magic by Zoe Reiches; and burritos from Anna’s Taqueria and ice cream J.P. Licks at this second annual, family-friendly block party, with profits benefiting the completion of a school building at New Life International Orphanage in Ghana. Vibram and ToPo Athletic have donated items for a raffle. Information is here.

Ignite! A Global Street Food & Fire Festival from 6 to 10 p.m. Saturday in Union Square Plaza, 90 Union Square, Somerville. There is a suggested donation of $2. (A contribution of canned food is welcome, benefiting the Somerville Homeless Coalition.)

This celebration of the sizzling food landscape in and around Union Square features international eats, fire throwers and circus arts and more – keep an eye out for food demos, a “Nose Olympics” and entertainment ranging from mimes to storytellers, magic and coconut bowling. Food vendors include Casa B, Cantina La Mexicana, Siam Kitchen, Bao Nation, Juice Union, Mineirao, Himalayan Kitchen and the Arts Council’s Nibble Culinary Entrepreneurs. The rain date is 6 to 10 p.m. Sunday. Information is here.

“Doctor Strange” screening from 8 (or whenever sundown is) to 10 p.m. Saturday at Sylvester Baxter Riverfront Park, 355 Assembly Way, in Assembly Square, Somerville. Free.

One of the most recent Marvel superhero flicks – called by critic Tom Meek “a piquant changeup for fans who have come to find the ‘Avengers’ series getting long in the tooth” – screens for free, with seating on the lawn. Just bring a blanket, lawn chair and picnic and watch the magic happen. Information is here.

Summer Sundays from 11:30 a.m. to 3 p.m. Sunday at the Harvard Semitic Museum, 6 Divinity Ave., in the Agassiz neighborhood near Harvard Square. Free.

Every Sunday through Aug. 27, this free museum invites families to drop in to create Egyptian accessories, play ancient board games and inscribe clay tablets (most activities are best for ages 5 to 12) while exploring arts from the lands of the Ancient Near East. Information is here.