Cambridge is no stranger to adaptive reuse projects, which revitalize an existing structure for new purposes. One has been around since 2002; the other is opening soon.

These yellow jacket wasps get up to an inch long and scary looking, with a a well-deserved reputation for aggressiveness – though only when protecting their nest.

In a look ahead at a week of Cambridge and Somerville events, there’s a Fresh Pond nature walk and Nature in the City Festival, “Cinema Strange” and free screenings of new Pixar classics, classes in augmented reality and a “Yart Sale” – a citywide yard sale for art.

Bullfrogs will eat just about any animal smaller than they are. Scientists have found in bullfrog stomachs rodents, lizards, snakes, small birds, spiders and even bats – with a tongue that propels out like a slingshot so frogs can use their hands to stuff large prey into their maws.

The city is in a drought emergency as it bakes under a string of days with temperatures in the high 80s and 90s, and the city must take action, city councillors said Monday.

Since puffins can live for 30 years or more, one bad season doesn’t doom the species, but a series can spell big trouble for the future of the population – and a series is underway.

We spoke to Sara Dosa, director of the documentary “Fire of Love,” about what draws her to a story, how to find the best of 200 hours of film archives and what had to be left out.

After a year of research, an initiative to create a greener economy in Cambridge was presented in June, though some worried that the initiative wouldn’t make it off the drawing board.

The state’s changes to Memorial Drive could – and should – fully separate paths by repurposing the existing roadway, implement additional traffic calming measures and more.

The 20-foot community-made tapestry at the Mass Audubon Magazine Beach Nature Center is horrifying, but since it’s made of plastic waste, that’s by design, the artists explain.