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Celebrate Jasmine Warga's A Rover's Story with Mad Science's Radical Robots Workshop! Explore a world of robots and try your hand at building your own in this hour-long workshop. Recommended for children ages 5 and up. Registration is required. This event is part of a special series promoting our 2026 Curious George Lecture (CGL) with Jasmine Warga, award-winning author of A Rover's Story, Other Words for Home, and many other popular children's books. Funding is generously provided by the Cambridge Public Library Foundation.

Celebrate Jasmine Warga's A Rover's Story with Mad Science's Radical Robots Workshop! Explore a world of robots and try your hand at building your own in this hour-long workshop. Recommended for children ages 5 and up. Registration is required. This event is part of a special series promoting our 2026 Curious George Lecture (CGL) with Jasmine Warga, award-winning author of A Rover's Story, Other Words for Home, and many other popular children's books. Funding is generously provided by the Cambridge Public Library Foundation.

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.

Mass Audubon will lead an exploration around the library in search of plants and animals, while using scientific tools like binoculars and magnifying lenses to get a closer look. We'll record what we find in our nature journals and play nature games. All materials will be provided. In the instance of bad weather, this program will take place in the Children's Room. No registration required. This program is recommended for children 4-8 and their caregivers. Hosted by Mass Audubon and the Cambridge Public Library.

Mass Audubon will lead an exploration around the library in search of plants and animals, while using scientific tools like binoculars and magnifying lenses to get a closer look. We'll record what we find in our nature journals and play nature games. All materials will be provided. In the instance of bad weather, this program will take place in the Children's Room. No registration required. This program is recommended for children 4-8 and their caregivers. Hosted by Mass Audubon and the Cambridge Public Library.

The City of Cambridge urges residents planning to celebrate Halloween to follow the guidance from the Massachusetts Department of Public Health and the Centers for Disease Control and Prevention (CDC) and to engage in only lower or moderate risk activities to minimize the risk of exposure to COVID-19. Halloween activities are subject to the current state gathering size limits as well as applicable any sector-specific workplace safety standards. Halloween activities are subject to the current state gathering size limits.

The Cambridge Department’s Traffic Enforcement Unit works all year to service the community by enforcing the rules of the road. Our goal is to reduce the number and severity of crashes in the city. Many of the current enforcement programs are a direct response to community complaints regarding speeding and other violations. The Department also spends time educating the public when there are any infrastructure changes, like new bike lanes or traffic patterns. We are committed to fostering greater traffic safety for motorists, bicyclists, and pedestrians.

Written By Mfoniso Udofia and directed by Tasia A. Jones, Her Portmanteau is an explosive story of betrayal and forgiveness, centering on a Nigerian mother in the U.S. and her two daughters who lived very different lives. A reunion forces them to reconcile their past, full of clashing traditions and a family legacy that spans time, culture and generations. Produced by Central Square Theater and The Front Porch Arts Collective. Cosponsored by Cambridge Public Library and the Citizens' Committee on Civic Unity. Registration is required.

Join the Cambridge Public Library for a Teach-In facilitated by the team of Transition Magazine. Contributors to the current issue on Sudan—Fatin Abbas, Alex De Waal, Nisrin Elamin, and Alden Young—as well as members of the local Sudanese community will speak and discuss the present-day conflict in Sudan, its roots, what stands to be lost, and how to move toward a lasting peace. Free copies of the Sudan issue of Transition will be on hand. Registration is required for virtual attendance.

Harvard Book Store and the Cambridge Public Library welcome Ben Wikler—political organizer and strategist who served as the chair of the Democratic Party of Wisconsin from July 2019 to July 2025—for a discussion of his new book, This Is The Plan: How to End America's Meltdown and Save Democracy. He will be joined in conversation by Danielle Allen—James Bryant Conant University Professor at Harvard University, acclaimed author of Our Declaration, and the forthcoming book Radical Duke, releasing June 2026. Registration is required.