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Harvard Book Store and the Cambridge Public Library welcome Alvin E. Roth—Nobel Prize–⁠winning economist, the Craig and Susan McCaw Professor of Economics at Stanford University, and the George Gund Professor of Economics and Business Administration Emeritus at Harvard University—for a discussion of his new book, Moral Economics: From Prostitution to Organ Sales, What Controversial Transactions Reveal About How Markets Work. He will be joined in conversation by Ray Fisman—who holds the Slater Family Chair in Behavioral Economics at Boston University. Registration is required.

Our Magic Tree House book group for kids ages 5-10 meets the first Friday of the month. Pick up a copy of the book beforehand. Our November book is Magic Tree House #3, "Mummies in the Morning." This event is onsite at O'Connell, with the option to attend virtually. A Zoom link will be sent to all registered participants 1 hour before the event. Need a laptop or hotspot to participate? Call the O'Connell Branch at 617-349-4019. For questions about the Magic Tree House book club, please email cmeisler@cambridgema.gov.

Our Magic Tree House book group for kids ages 5-10 meets the first Friday of the month. Pick up a copy of the book beforehand. Our September book is Magic Tree House #1, "Dinosaurs Before Dark." This event is onsite at O'Connell, with the option to attend virtually. A Zoom link will be sent to all registered participants 1 hour before the event. Need a laptop or hotspot to participate? Call the O'Connell Branch at 617-349-4019. For questions about the Magic Tree House book club, please email cmeisler@cambridgema.gov.

Our Magic Tree House book group for kids ages 5-10 meets the first Friday of the month. Pick up a copy of the book beforehand. Our December book is Magic Tree House #4, "Pirates Past Noon." This event is onsite at O'Connell, with the option to attend virtually. A Zoom link will be sent to all registered participants 1 hour before the event. Need a laptop or hotspot to participate? Call the O'Connell Branch at 617-349-4019. For questions about the Magic Tree House book club, please email cmeisler@cambridgema.gov.

Our Magic Tree House book group for kids ages 5-10 meets the first Friday of the month. Pick up a copy of the book beforehand. Our October book is Magic Tree House #2, "The Knight at Dawn." This event is onsite at O'Connell, with the option to attend virtually. A Zoom link will be sent to all registered participants 1 hour before the event. Need a laptop or hotspot to participate? Call the O'Connell Branch at 617-349-4019. For questions about the Magic Tree House book club, please email cmeisler@cambridgema.gov.

The Main Library "Healthy Mouth, Healthy Life" workshop has been cancelled. We apologize for the inconvenience. The Harvard School of Dental Medicine’s Students for Smiles Club and the Cambridge Public Library are hosting a free community event on oral health. Attendees will learn how to brush and floss the right way through a short talk and hands-on practice. The program will also share simple tips for preventing common dental problems and explain when to see a dentist. Free toothbrushes, toothpaste, floss, and local dental care resources will be available for everyone.

Join clinical herbalist Mo Katz-Christy for a walk around the Alewife Reservation to learn about the medicine, botany and magic of medicinal herbs. We will discuss medicinal plants in Cambridge and their specific indications and properties. Bring a notebook as we delight in the bounty of our neighborhood! Registration is required. We will meet at the seating area on the bike path near the Alewife Brook Pathway and DCR Wetland Boardwalk: https://maps.app.goo.gl/CC32nJqG1Xk3b5zDA. It is a 6 minute walk from Alewife MBTA station, accessible by bus or by the Red Line. There is no parking available on-site. Parking is available at Alewife MBTA station, the Alewife Reservation lot on Acorn Drive or limited on-street parking on Cambridgepark Drive.

Due to the popularity of Sifu Diaz's classes, we expect participants to attend all sessions and participation in this program will be decided by lottery. Join us in this eleven-week Tai Chi Paradigm practice, which focuses on the mind and body connection. Tai Chi is a fluid sequence of movements choreographed in a low impact routine. This is an in-person event at the Valente Branch. To enter the lottery, please register for the waitlist below. This waitlist will constitute the pool from which 15 names will be drawn randomly. Registration will open Wednesday, March 4 at 9AM and close Wednesday, April 1 at 5PM. Participants selected will be notified on Friday, April 3. Sponsored by the Cambridge Public Library Foundation

This engaging and educational program is led by master fitness trainer, author, and motivational speaker Shaun Zetlin. Designed for teens and adults of all fitness levels, this session explores how to build strength, improve balance, and move with greater confidence in everyday life. Through clear instruction and gentle, accessible demonstrations, participants will learn how simple movement patterns can enhance stability, coordination, and independence over time. Shaun also highlights the connection between physical confidence and emotional well-being, offering practical tools to help individuals feel more secure, capable, and empowered in their daily lives. All exercises are adaptable, with options performed seated or standing, making the program inclusive and approachable for a wide range of abilities. Registration is preferred not required.

Our Magic Tree House book group is for kids ages 5-10. Check out a copy of the book beforehand, or download it from the Libby app. Our April book is Windy Night With Wild Horses. This book group will meet virtually and in person at the O'Connell Branch. Please register below if you would like to attend virtually. A Zoom link will be sent to all registered participants one hour before the event. Need a laptop or hotspot to participate? Call the O'Connell Branch at 617-349-4019. For questions about the Magic Tree House Book Club, please email cmeisler@cambridgema.gov.