Rob Hopkins’ regularly updated ‘Transition Culture’ blog today features a report back from his trip the the Hollies Sustainability Centre in West Cork, Ireland. Its a project he was involved in setting up from 1998 onwards before moving to Totnes to concentrate on Transition Towns, and its really interesting to see his account of how things have evolved and moved on. Its also a feast of Humble Designs, particularly intriguing is the cob greenhouse, an experimental combination of two low impact but effective technologies; “greenhouses are great growing spaces, offering protected spaces and harvesting sunlight, but they lose the heat they gather just as quickly.  Cob walls have great thermal mass and can store and re-radiate heat.  So, put them together!” Whether the idea will work is yet to be seen as the structure isn’t quite complete (needs a few more window panes putting in), but check out the full story here