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All cannabis businesses, including Marijuana Treatment Centers (MTC), as defined in the Cannabis Business Permit Ordinance, require a Cannabis Business Permit from Cambridge Inspectional Services Department (ISD) before opening. This city permit is different from the state Marijuana License application that is managed by the Massachusetts Cannabis Control Commission (MA CCC). Before the MA CCC issues a final Marijuana License, they will request a copy of your Cannabis Business Permit.

Learn how to use apps on your phone (iPhone or Android) for wellness and fun. You will learn how to use MyChart, Spotify and how to download apps on your phone. This class will be delivered by a DOORS program instructor. To learn more about the DOORS program please go to: https://www.digitalpsych.org/doors-program.html To view and register for other Basic Tech Classes at the Library, please go to tinyurl.com/basictechclass. Registration is encouraged, but not required.

Learn how to use apps on your phone (iPhone or Android) for wellness and fun. You will learn how to use MyChart, Spotify and how to download apps on your phone. This class will be delivered by a DOORS program instructor. To learn more about the DOORS program please go to: https://www.digitalpsych.org/doors-program.html To view and register for other Basic Tech Classes at the Library, please go to tinyurl.com/basictechclass. Registration is encouraged, but not required.

Meet a swimming, quacking friend at a duck-themed story time, learn about duck behavior and anatomy, and do a themed activity! Best of all, in the Duck Circle, youth are able to touch and interact with a live duck. Due to the particularly fine weather, this program will meet in the Valente Reading Garden, at the corner of Cambridge Street and Berkshire Street. This program is for children of all ages, with a caregiver. Registration is required. When registering, please indicate how many children are attending. Adults do not need to be included in the numbers for registration. Contact the Valente Library at 617-349-4015 for more information.

Learn about exciting opportunities with state and municipal employers!

Laws for smoking marijuana in public

The Library celebrates Juneteenth with the Dave Macklin Band as they pay tribute to the musical contributions of Black artists. PARK SOUNDS 2025 brings free outdoor musical performances featuring local artists to the front lawn of the Cambridge Public Library Main Branch. These events are all-ages. Bring a chair, food, and loved ones to celebrate the summer! Funding is provided by the CPL Foundation.

Twenty-five years of major investment in sewer and stormwater infrastructure and maintenance has significantly improved the quality of water discharged to the Charles River, the Little River, the Alewife Brook, the Mystic River, and the Boston Harbor.

Learn more about what it takes to become a Cambridge Police Officer, the requirements, how to register for the civil service exam, how to best prepare, the selection process, the police academy, benefits, background on the Department, and more.

Join Conservation Coordinator Alison Cariens for a closer look at pigments in the Harvard Art Museums' famed Forbes Pigment Collection. In this illustrated talk, Alison will discuss the history of the collection, the function of the materials within the conservation labs, and the significance of the collection as a “library of color.” Together, we will also delve into the story behind each featured pigment and discuss how each lends a unique window into the history of human creativity.