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The Festival of Communities is back in Tower Hamlets. This family-friendly affair features more than a hundred things to do, including interactive stalls, hands-on demonstrations, talks and games all showcasing research, creativity and community initiatives in the borough. Organised by Queen Mary University you'll also find plenty of brain-expanding events from 3D printing demos and workshops with astrophysicists. Find it in Stepney Green on Saturday and on Queen Mary's University campus on Sunday. Find out more here.