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Harvard Book Store, the Harvard University Division of Science, the Harvard Library, and the Cambridge Public Library welcome Felice Frankel—award-winning science photographer and research scientist at the Massachusetts Institute of Technology in the department of Chemical Engineering—for a discussion of her first book for young adults, Phenomenal Moments: Revealing the Hidden Science Around Us. She will be joined in conversation by Melissa Franklin—the Mallinckrodt Professor of Physics and Director of Graduate Studies at Harvard University. Registration is required.

Report a graffiti to the city using our online portal or mobile app, SeeClickFix.

The Cambridge Hip-Hop Collective will bring together the Hip-Hop, RnB and Electronic Dance Music communities in this collaborative event at the Urban Park (UP) roof garden in Kendall. In addition to live sets from some frequent Cambridge venue performers like Sun.Sets.Boston, The Modular Troupe will be bringing a live 5-piece band playing smooth RnB and Hip-Hop classics with featured performances from local singers and rappers.

Report a pothole to the city using our online portal or mobile app, SeeClickFix.

When temperatures top 85 degrees, the flowers of “Heat BLOOMS”—a new art installation in Cambridge’s Harvard Square—bloom, like a visual thermometer warning of extreme heat. Three consecutive 85-degree days or hotter are considered a high alert danger by the Cambridge Public Health Department.

Report a broken or defective streetlight to the city using our online portal SeeClickFix.

Looking for some basic computer or mobile device guidance? Want to learn how to access audiobooks and eBooks? Stop by at the O'Connell Library for our drop-in hours! Drop-in sessions will be limited to 30-minutes for each patron. We can help you with: accessing library eBooks, audiobooks, and other eResources on your devices e-mail and searching the web smartphone and mobile app questions We are not able to help you with: installing advanced software programs completing online transactions for you computer hardware and technical maintenance To view other available timeslots and dates, use the following link: One-on-One Tech Help schedule. Registration is not required. If you have any questions, please contact Gina Josette Rivera by email at gjosette@cambridgema.gov

This temporary relocation of the Headquarters Companies will allow for the total rehab of the current Fire Headquarters building

Recommendations of the City Manager’s Task Force to Examine the Future of Public Safety in Cambridge

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.