In a look ahead at a week of Cambridge and Somerville events, there’s Paul Giamatti’s “Chinwag” podcast, The Bread and Puppet Theater, Record Store Day, “Secret Sounds of Ponds” and other Earth-related events, cake decorating and Shakespeare’s 460th Birthday.

Cambridge public notices for Washington Avenue on Avon Hill; Alewife Brook Parkway; and Goodman Road in Mid-Cambridge.

Cambridge public notices for Washington Avenue on Avon Hill; Moulton Street in Cambridge Highlands; Alewife Brook Parkway; and 815 Somerville Ave. in Porter Square.

The city is sponsoring a free household hazardous waste collection day from 9 a.m. to 1 p.m March 31 at Danehy Park.

Shakespeare’s “Julius Caesar” in the park; Outdoor movie night in Harvard Square; The Hereafter Party benefit for the Children’s Room; A Day of Play in Union Square; and A Summer Soiree dance party.

Members and alternate members are sought to fill vacancies on the Avon Hill Neighborhood Conservation District Commission, Half Crown-Marsh NCD Commission and Mid-Cambridge NCD Commission

The city is sponsoring a free household hazardous waste collection day from 9 a.m. to 1 p.m Oct. 17 in the Field Street Parking Lot at Danehy Park.

The Cambridge City Run is a flat, fast, 5k run and walking course – billed as Henrietta’s Walk – along the footpaths of Danehy Park, with signup proceeds benefiting college scholarships for CRLS student athletes and to raise awareness of domestic violence.

Longfellow Holiday Open House; Street Theory pop-up art gallery; 11th Annual Kendall Square Holiday on Ice; Holiday Pops with the CSO (and more music); Black Market holiday market (and more shopping); and Linking Hands Peace Sign Cambridge.

Harvard Summer Chorus and Summer School Orchestra concerts; Org: Black and White Ball; games, a rummage sale and music festival for and about girls and women; second Port Sounds Music & Comedy Fest; and third Cambridge Jazz Festival.