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Want to learn more about clean energy and climate opportunities in the Port? Join us for a walking tour highlighting renewable energy, critical facilities, and climate change vulnerabilities on April 24th! We will meet at Clement Morgan Park to start the tour at 2:00 PM. We can’t wait to chat with you about climate preparedness, clean energy, and our new Cambridge microgrid project, all while strolling through The (beautiful) Port – see you there!

The City of Cambridge has partnered with Cambridge Bike Give Back (CBGB) to help eligible Cambridge residents get refurbished bicycles. You can help in this effort by donating your unwanted bikes for refurbishing and CBGB will pass them on to a person or persons in need. Cambridge Bike Give Back will be collecting bike donations on Sunday, June 15, from 11am to 2pm, at Green Rose Heritage Park. Thanks in advance for your help and support!

Celebrate National Moth Week in style! Step 1: Drop by the Collins Branch to make a moth mask with guidance and costume advice from Cambridge Wildlife Arts. Step 2: Debut your mask on the red carpet at the second annual Cambridge Moth Ball on Wednesday, July 23 from 7:30-10 p.m at the Fresh Pond Reservation's Kingsley Park. Learn all about moths and their role in the ecosystem, participate in "mothing," and take photographs of moths. Costumes encouraged for children & adults!

Join us as we take a walk to enjoy the natural wonders of spring and learn about clouds. We will get to know some spring birds, look for early flowers and leaf buds, and see how many different types of clouds we can identify! This event is open to all ages. The walk will be on a wheelchair-accessible paved footpath in Danehy Park. Registration for this event is required; register below. The meeting spot for this event will be sent to registrants via email.

In honor of Earth Day, spend your afternoon at the Library creating your own terrarium. In partnership with Emerald City Plant Shop, you will have the opportunity to learn more about different kind of plants and plant care. This event will be conducted in the front park area of the Library. In the case of rain, the class will be moved to the community room. The Library will provide needed supplies. There will be 2 timed sessions. Please make sure to choose the time that works best for you.

In honor of Earth Day, spend your afternoon at the Library creating your own terrarium. In partnership with Emerald City Plant Shop, you will have the opportunity to learn more about different kind of plants and plant care. This event will be conducted in the front park area of the Library. In the case of rain, the class will be moved to the Rossi room. The Library will provide all needed supplies. There will be 2 timed sessions. Please make sure to choose the time that works best for you.

Join us for a guided 60-minute art tour featuring public artwork in East Cambridge and learn about how Cambridge Arts commissions and maintains art for public enjoyment. We will visit three public artworks, and two sidewalk poems. Meet at Centanni Park between the Multicultural Arts Center and the Middlesex South Registry of Deeds. This event is part of our Time Out for Public Art series in collaboration with Cambridge Arts. In October, these will be 60-minute art tours where we visit multiple sites as a group. Registration is required.

Join Earthwise Aware for a fascinating walk as we explore how land use and climate change shape the future of urban green spaces. The loss of biodiversity and the impacts of climate change are pressing challenges, but small actions can lead to big change. Discover how you can make a difference by helping to protect urban ecosystems. Learn to observe and document the incredible interactions between plants, animals, and their habitats while contributing to EwA’s community-driven ecology science projects. Together, we can create a brighter future for urban nature! Meet in Joan Lorentz Park. Registration required.

Join Revolution 250, Boston Celebrations, Hobby Knolls Stables & the Henry Knox Artillery as wells as citizens of the towns of Weston, Waltham, Watertown, and Cambridge for a commemoration of the 250th Anniversary of the epic 1776 adventure of Henry Knox and his "Noble Train of Artillery" trekking across Massachusetts on their way to Boston. The commemoration at 2:00 p.m. follows a procession from the Cambridge Common at 1:00 p.m. that will travel to Joan Lorentz park led by the Sudbury Ancient Fyfe & Drum Corps and finishing with teams of Clydesdales pulling replica sleds and cannons which began their journey in upstate New York.

Seven projects in total were selected after a record number of ideas were submitted and more than 10,000 Cambridge residents age 12 and older voted how to spend $1 million on capital and operating projects to improve the community. In order of ranked votes, the following seven projects won $1,060,000 in fiscal year 2026 funding: 1. Improve Parks with Shade Structures and Seating ($250,000) 2. Build a Pollinator Garden in a City Park ($75,000) 3. Funding for High School Clubs ($150,000) 4. Slower Speeds for Safer Streets ($250,000) 5. Mobile Center for Hard-to-Recycle Items ($75,000) 6. Welcome Baby Boxes for New Parents ($60,000) 7. Electric Vehicle Chargers ($200,000)