PowerPoint Presentations by the 6th grade students of 7th Primary School of Palaio Faliro, Athens, Greece (School Year 2012-2013, English Teacher: Maria Papadaki) for the Environmental Programme entitled "Τσιμεντένιες πόλεις, πέτρινες ζωές" OR "Cities of cement, Lives of stone" in cooperation with the Greek teacher and the Arts teacher of the class. Beddington Zero Energy Development (BedZED) is an environmentally friendly housing development in Hackbridge, London, England.