The Painted Burro, an upscale Mexican restaurant in Somerville’s Davis Square, is adding its fourth location in a place familiar to fans of the cuisine: the former home of the Border Cafe in Harvard Square.

What keeps a family-owned, family-operated business going in Cambridge for 46 years and counting? Good timing helps – such as long ago buying the building that holds it – but so does customer service and customer loyalty, and a mix of flexibility and tradition.

At 50 years old, Grendel’s Den is not only going strong, but has come to embody the essence of Harvard Square and how it (always) “used to be cool.” The podcast we’re putting together, “A People’s History of Food and Drink: Five by Ten in the Den,” is meant to bring people back to the nostalgia of each of its decades.

Public meetings this week look at preparing the school district budget process, Envision Cambridge and single-family zoning, landlord and leasing issues at the Cambridge Redevelopment Authority’s Foundry building and “nonprofit row,” and more.

It wouldn’t feel right to let a week pass without another multimillion-dollar purchase by Denver-based Healthpeak in the Alewife area – and on Thursday came news of a $72 million transaction for 67 Smith Place.

Before a tree-cutting moratorium went into place in 2019, the pace of felled trees seemed to accelerate; while it’s not so simple for multimillion-dollar construction, developers, city councillors and Planning Board members are all trying to figure out how a lab- and office-space moratorium affects business as usual.

The Deconstructed Grilled Cheese & Tomato on the brunch menu at Source is a flat, lightly breaded mozzarella patty, fried and served in a tangy, slightly spicy tomato purée – and it’s quite brilliant.

Despite what Cambridge’s chief public health officer called “uncontrolled transmission” of Covid-19, the city won’t require restaurants, fitness centers and other indoor public spaces to mandate Covid-19 vaccination for their customers and workers, as Boston and neighboring communities have done.

A Classical Revival building by an architect known for Roman Catholic churches featured five domes with two exhibition wings and a circular theater with seating for 3,000, and the world’s first Shoe & Leather Exposition drew 30,000 visitors on opening night. But success was short-lived.

Rents were down 1.8 percent in December after a year in which Cambridge saw a 25.2 percent rise in prices and Somerville rose even more, according to some real estate industry analysts. Another local trend continued too: Life-sciences clusters spreading from Kendall Square.