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1986 report establish a set of design guidelines for the North Massachusetts Avenue corridor.

Join Earthwise Aware (EwA) for an interactive walk to observe, document, and take part in shaping urban spaces that work with nature. Together, we will explore how design choices and climate pressures shape the ecological value of our everyday green spaces, and document habitat conditions using simple citizen science tools. Starting at the library lawn, we will examine spaces that appear green but often function poorly. Manicured lawns and sparse tree plantings may look inviting, yet they frequently support little biodiversity and can limit soil health and resilience. What makes a space truly nature-friendly? We will record what is present, what is missing, and what that tells us about ecological function. During the walk, we will: Observe and document plant communities and habitat quality Identify signs of low and high ecological function Compare conventional landscapes with more resilient plantings such as native beds or meadow patches Contribute real data that supports local ecological understanding and decision making This is participatory science in practice. Your observations will feed into broader efforts to track urban biodiversity and inform better land use choices. The program will meet outside the library in Joan Lorentz Park. Registration required. Rain date: Wednesday May 6

Supplement to the provisions of the Zoning Ordinance south of Pacific Street and west of Albany Street for Planning Board special permit projects. Referenced in Zoning Ordinance, Articles 17.50 through 17.200.

Join Earthwise Aware for a thought-provoking workshop examining how land use and climate change influence the design, function, and future of urban green spaces. Starting at the library’s front lawn, we will explore how conventional designs can undermine biodiversity and tree health. What makes a space truly nature-friendly? Can a lawn, sidewalk, or plaza be transformed into habitat? We will compare low-functioning green spaces with examples of micro-forests, native plantings, and meadows. Along the way, we will observe seasonal changes in plants and wildlife through the lens of phenology, the study of nature’s calendar. We will also introduce simple participatory science tools that help monitor habitat quality, foster community engagement, and inform better decisions. Even a modest native plant patch can be a pocket of resilience. Come learn how to spot, support, and reimagine urban nature that works with the ecosystem, not just mimics it. The program will start with a workshop in the Rossi Room, then move outside to Joan Lorentz Park. Registration required.

Proper care for newly planted Replacement Trees helps to ensure they will thrive and expand the City’s urban forest.

1986 study of concerns and opportunities for the section of Massachusetts Avenue between Porter Square and the Arlington line.

Join the Department of Public Works Urban Forestry Division outside the Main Library from 10 a.m.-5 p.m., weather permitting. Members of the community are invited to come learn about Cambridge’s Urban Forest. Staff will be giving away free seedlings, coloring books, crayons and more!

The King Open / Cambridge Street Upper School and Community Complex has been selected as one of 10 winners of the Urban Land Institute’s (ULI) 2023 ULI Americas Awards for Excellence.

The Cambridge Department of Public Works invites you to celebrate “Arbor Week” with a series of events to celebrate Cambridge's Urban Forest.

USAR (Urban Search And Rescue) Truck is availble for response to Major Emergencies