The Green Block Build Collaborative, a coalition of community organizations including LISC and The Partnership CDC, is inviting Walnut Hill residents and neighbors to the Green Block Party tomorrow, from 10 a.m. to 2 p.m. on the 4700 Block of Sansom Street. This is a free community event where residents can learn about how to transition to a cleaner, greener and healthier future. See the flyer below for more details.