Bonus episode. AJ Climate Champions hosted by Hattie Hartman. Author and critic Owen Hatherley describes approaches to the retrofit of Modernist buildings, lessons learned from post-Soviet housing and why he thinks White Design’s straw bale Lilac Cohousing in Leeds could be a replicable new build approach. The AJ's Will Hurst explains the tactics and ambitions of the RetroFirst campaign, from engaging with MPs to raising public awareness, as well as the policy levers necessary to prioritise retrofit.   
In a quick news roundup, hosts Hattie Hartman and George Morgan share their views on Zaha Hadid Architects’ Forest Green Rovers timber stadium proposal and round up other sustainability news, including ACAN’s Carbon Footprint of Construction report.    
For show notes to this episode and to listen to all AJ podcasts, visit architectsjournal.co.uk/podcasts