
Brought to you by the Architects’ Journal. AJ sustainability editor Hattie Hartman and co-host Joe Jack Williams talk to changemakers and innovators who are transforming architecture by designing in ways that respect planetary boundaries. Nominated for Audio Content of the Year at the PPA Awards 2025.
Show notes & more info here: https://www.architectsjournal.co.uk/podcasts
Episodes

Thursday Jul 08, 2021
Thursday Jul 08, 2021
12. AJ Climate Champions with Hattie Hartman. Continuing its focus on landscape, Climate Champions turns its attention to two recent high-profile competitions where green and blue infrastructure promise to drive the design.
First up is Thamesmead Waterfront, a 100-hectare riverfront site in Greenwich to be developed in a joint venture between Lendlease and Peabody, the site’s owner. To hear about the winning scheme, we speak to Phil Askew, director of landscape and placemaking at Peabody, and Selina Mason, director of masterplanning at Lendlease.
The Home of 2030 competition called for innovative home designs that are ‘green, age-friendly and healthy’. We speak to Sarah Jones-Morris, director of Bristol-based Landsmith Associates and the landscape architect behind Igloo Regeneration’s winning proposal, about how green and blue infrastructure permeate the scheme.
For show notes to this episode and to listen to all AJ podcasts, visit architectsjournal.co.uk/podcasts

Wednesday Jun 23, 2021
Wednesday Jun 23, 2021
11. AJ Climate Champions with Hattie Hartman.
In this second episode on landscape, we speak to Jo Gibbons of landscape practice J&L Gibbons whose wide-ranging work encompasses both the Dalston Eastern Curve Garden in Hackney and Walpole Park in Ealing, the setting of John Soane’s Pitzhanger Manor.
Gibbons explains why she won’t go near a project unless she’s involved from the outset and why today, diversity of planting is essential for biosecurity. A frequent external examiner, Gibbons bemoans the fact that there are so few landscape architects, while in architecture schools, architects too often design landscapes with minimal landscape tuition.
In a news roundup, co-hosts Hattie Hartman and George Morgan unpick the furore surrounding the Serpentine Pavilion’s carbon negative claims and the alarming findings of the latest Committee on Climate Change report.
For show notes to this episode and to listen to all AJ podcasts, visit architectsjournal.co.uk/podcasts

Thursday Jun 10, 2021
Thursday Jun 10, 2021
10. AJ Climate Champions with Hattie Hartman.
Barnabas Calder charts the course of architectural history from hunter gatherers’ earliest mud and bone huts through coal-powered industrial Liverpool all the way to today’s search for regenerative design in Cork House (2019).
Calder explains how he got hooked on a climatic approach to architectural history and why he’s concluded that ‘small is good’, deciding to retrofit his current Liverpool terrace rather than upgrade to a larger home.
For show notes to this episode and to listen to all AJ podcasts, visit architectsjournal.co.uk/podcasts

Wednesday May 26, 2021
Guy Shrubsole on rewilding Britain and greening our cities
Wednesday May 26, 2021
Wednesday May 26, 2021
9. AJ Climate Champions with Hattie Hartman. In this first of several episodes on landscape and biodiversity, we speak to Guy Shrubsole, policy and campaigns co-ordinator at Rewilding Britain and author of Who Owns England?
Shrubsole explains why land ownership patterns in England are at the root of the housing crisis, the extent to which agricultural practices are responsible for the ecological crisis and how rewilding can help restore biodiversity.
And in a brief news roundup, co-hosts Hattie Hartman and George Morgan discuss the launch of ACAN’s Natural Materials workstream, architecture practice Orms’ new open source Material Passports tool and the RIBA’s Mandatory Competences consultation.
For show notes to this episode and to listen to all AJ podcasts, visit architectsjournal.co.uk/podcasts

Thursday Apr 15, 2021
Steve Webb & Wilf Meynell: ‘We’re brainwashed into steel and concrete mode’
Thursday Apr 15, 2021
Thursday Apr 15, 2021
8. AJ Climate Champions with Hattie Hartman. Steve Webb of Webb Yates Engineers explains how to persuade clients to use more timber and stone, and Wilf Meynell shares Studio Bark’s approach to Victorian house extensions.
Webb describes what it will take to transform an industry fixated on concrete and steel, and outlines simple steps to decarbonise Victorian house extensions, while Meynell explains the budget challenges of low-carbon retrofit and why architecture is essentially political.
For show notes to this episode and to listen to all AJ podcasts, visit architectsjournal.co.uk/podcasts

Wednesday Mar 31, 2021
Wednesday Mar 31, 2021
7. AJ Climate Champions hosted by Hattie Hartman. Harry Paticas explains why he left architectural practice to focus on retrofitting schools, and how he educates schoolchildren on the climate emergency.
After more than a decade at Arboreal Architecture, the practice he co-founded in 2007, Paticas left in January 2021 to work full-time on RAFT, Retrofit Action for Tomorrow, a Lewisham-based community enterprise he founded that promotes low-carbon retrofit in primary schools. RAFT combines professional retrofit expertise with a hands-on educational programme. Equipping children with thermal cameras and teaching them rudimentary building physics with hot baked potatoes, Paticas is expanding the reach of his retrofit know-how.
And in a quick news roundup, co-hosts Hattie Hartman and George Morgan share views on ACAN’s student activism campaign, greenwashing and Passivhaus myth-busting.
For show notes to this episode and to listen to all AJ podcasts, visit architectsjournal.co.uk/podcasts

Thursday Mar 11, 2021
Owen Hatherley on Modernism + Will Hurst explains RetroFirst (bonus episode)
Thursday Mar 11, 2021
Thursday Mar 11, 2021
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

Wednesday Jan 27, 2021
Anna Heringer: 'You can build with clay in a very modern way'
Wednesday Jan 27, 2021
Wednesday Jan 27, 2021
6. Climate Champions hosted by Hattie Hartman. In the final episode in this series, German architect Anna Heringer talks to the AJ about mainstream building with earth, her 'Corona baby' – a birth space in the Vorarlberg region of Austria, and her pipeline of projects in Germany, Spain and Ghana.

Wednesday Jan 13, 2021
Sarah Wigglesworth: 'Sustainable architecture is fantastically creative'
Wednesday Jan 13, 2021
Wednesday Jan 13, 2021
5. Climate Champions hosted by Hattie Hartman. This episode centres on the retrofit of Stock Orchard Street, Wigglesworth's home and office completed in 2001. The Stock Orchard Street retrofit, completed in 2020, tackled maintenance and repair, a deep environmental upgrade and rethinking the house for ageing gracefully.

Wednesday Dec 16, 2020
Haworth Tompkins' Diana Dina: 'We want to share ideas with other practices'
Wednesday Dec 16, 2020
Wednesday Dec 16, 2020
4. Climate Champions hosted by Hattie Hartman. Diana Dina, head of sustainability and regenerative design at Haworth Tompkins, shares her insights on how to be a changemaker in a large architecture practice.
The episode also features a discussion with Lauren Shevills of ACAN on Foster + Partners and ZHA's controversial departure from Architects Declare.
