Rock ’n’ Roll Rumble Finals; “Love & Gravity” acrobatic storytelling; Community Sculpture Race and Exhibition; Ninth Annual Bookish Ball and Shakespeare’s Birthday Celebration; and the “Dimensions of Doctor Who” science event.

Police have announced a second arrest in a series of recent gunshot activity mainly in the Area IV/Port neighborhood.

Two Cambridge institutions are expanding in coming months, as a Darwin’s Ltd. sandwich and coffee shop plans to expand seating by 300 percent – including onto a new loft dining area – by taking over and building in the space occupied by University Stationers.

The spate of shots-fired incidents reported in the neighborhood known as Area IV and The Port is likely at an end with the arrest late Wednesday of a single person.

A minor “cave-in” atop workers Thursday shouldn’t slow construction at the Port Landing affordable housing development going up for a summer opening near Kendall Square.

Only four days after the most recent report of shots fired, police are saying Sunday that they have recovered three blank shell casings after responding to a call and anonymous email tip at Windsor Street and Broadway in Central Square.

Police are investigating reports of gunshots Wednesday around Columbia and Pine streets near Clement G. Morgan Park in the neighborhood known as Area IV/The Port – the third such incident this year.

Harold Pinter and Samuel Beckett double bill of one-act plays; “Who Would Be King” original theater experience; Chorus pro Musica’s “With Strings Attached” concert; Third Annual Inman Square Harvest Hoedown; and Girls Day @ the MIT Museum.

Area IV, the neighborhood next to Cambridgeport formerly known as The Old Port or The Port, will now again be known as The Port. Got it?

A suspect in mid-September’s fatal stabbing was arraigned Friday, with many details still to come in the crime, officials said at a press conference. What was notable was that an arrest came “in part as a result of the public’s cooperation with law enforcement.”