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Join herbalist Mo Katz-Christy for a walk through Danehy Park to identify plants and their medicinal uses! We will explore weeds and cultivated plants, trees and shrubs, with plenty of time for questions and conversation. Bring a notebook if you like. Meet us at the parking lot on Sherman Street (if you’re late you should be able to find us – we won’t move too far too fast!). Registration is required.

Join us for a lively discussion of a great book in person at the Main Library! Snacks will be provided. For ages 7-10 and a parent or caregiver. This month's book is Little Monarchs by Jonathan Case, a graphic novel which imagines a future world where all life on earth has become allergic to the sun. Human survivors have moved underground, and it's up to 10-year-old Elvie to distribute a cure made from Monarch wing scales to save the world! (Content: dystopian themes, some action and violence, natural disasters) Both caregiver and child should read the book before the discussion to participate. Registration is required — only one registration is needed per family. For questions about parent/child book group, please email Rachel: rbeaton@cambridgema.gov

Join us as we celebrate the official acceptance of the Cambridge-Yerevan Sister City Association Records into the Cambridge Public Library’s Archives and Special Collections. Learn about the collection and three significant objects given by Yerevan to the city of Cambridge with guest speaker, Gary Lind-Sinanian, Collections Curator of the Armenian Museum of America. We’ll be treated to a selection of traditional Armenian music sung by a local student. A sampling of hors d’oeuvres and Eastern Armenian desserts will be served following the program.

Teens, we need YOU: Earn community service hours while you help to plan programs and activities for other teens. Practice collaboration, communication, leadership and social skills. Learn more about the Library’s mission and values. Be a creative force for positive change in your community! Are there programs and activities you would like to see at the Library? Come share your ideas! We meet monthly during the school year. No registration is required, and new members and guests are always welcomed. Stop by the Teen Room or call 617-349-4027 to learn more.

January 2026 classes will be held at Saint James Church, 1991 Massachusetts Ave, Cambridge, MA 02140 due to repairs to the O'Neill Branch Library. Join us for an English for Speakers of Other Languages (ESOL) Class. This class will be taught at an intermediate level. No testing is needed.

Learn about the Community Learning Center's Reading/Writing and Math classes for adults and take a placement test. Students work towards their high school equivalency (GED/HiSET) or want to improve their skills.

Learn about the Community Learning Center's Reading/Writing and Math classes for adults and take a placement test. Students work towards their high school equivalency (GED/HiSET) or want to improve their skills.

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.

The climate is changing, and we're all here on the planet together. Join us for a monthly community gathering and discussion of a variety of books about climate change. We will share thoughts, resources, and occasionally host special guests in a welcoming small-group environment. Our September book is What If We Get It Right? Visions of Climate Futures by Ayana Elizabeth Johnson. Copies are available to pick up at the Q&A desk at the Main Library and on the Libby app. This is a hybrid event. A Zoom link will be sent to all registered participants 1 hour before the event. Registration is required. Please contact alengel@cambridgema.gov with questions.

In 2024, the Urban Forestry Division of Cambridge Public Works planted 1,250 new trees and removed 5,000 square feet of pavement to create better planting conditions, enhancing the city's green infrastructure. The Division maintained a strong tree survival rate, with only 3.5% mortality for spring plantings, and expanded community engagement through the revamped Cambridge Urban Forest Friends newsletter, which saw over 105% subscriber growth. Residents can support the city's urban forest by becoming an Urban Forest Friend or subscribing to the newsletter.