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About This Podcast
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
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Recent Episodes
Ana Belizário: ‘Timber should be the material of choice in the global south’
Episode 61. AJ Climate Champions with Hattie Hartman and Joe Jack Williams. In this episode, we turn our attention to the global south. Ana Belizário describes Brazil’s burgeoning mass timber…
Kirsten Haggart: Building with timber has reached a ‘tipping point’
Episode 60. AJ Climate Champions with Hattie Hartman and Joe Jack Williams. In this episode, we take a deep dive into building with timber. Haggart shares numerous tips for practices just getting…
Joe Giddings on the ‘mind-blowing’ growth of bio-based materials in Europe
Episode 59. AJ Climate Champions with Hattie Hartman and Joe Jack Williams. On the eve of Cop30 in Brazil, Built by Nature European Networks Lead and ACAN co-founder Joe Giddings talks to the AJ…
Material Cultures' Summer Islam: ‘We start with a map of nearby materials and products’
Episode 58. AJ Climate Champions with Hattie Hartman and Rachael Owens. Material Cultures co-founder Summer Islam explains how a regional ‘materials matrix’ informs the design process. ‘We imagine…
‘Retrofit is seen as really alienating. We’re trying to blow that apart’
Episode 57. AJ Climate Champions with Hattie Hartman and Rachael Owens. Melissa Mean from community land trust WeCanMake explains how a community-led approach in Bristol is tackling the housing…
Tara Gbolade: ‘It’s unsustainable for small practices not to upskill’
Episode 56. AJ Climate Champions with Hattie Hartman and Rachael Owens. Gbolade Design Studio’s Tara Gbolade shares insights from her new book, Changing the Game: How to be a sustainable and…
‘Even a small practice can push the boundaries of reuse’ – Brisco Loran
Episode 55. AJ Climate Champions with Hattie Hartman and Rachael Owens. AJ Climate Champions’ latest series focuses on retrofit. Our guest today is Thom Brisco of Brisco Loran, who talks to us about…
IF_DO’s Sarah Castle: ‘People become the project’
Episode 54. AJ Climate Champions with Hattie Hartman and Rachael Owens. AJ Climate Champions latest series focuses on retrofit. Our guest today is IF_DO founder Sarah Castle, who explains that…
Chipperfield’s MC Piccinelli on how retrofit can enhance creativity
Episode 53. AJ Climate Champions with Hattie Hartman and Rachael Owens. AJ Climate Champions is back, with a new series focusing on retrofit. Our guest today is Maria-Chiara Piccinelli, associate…
Why earth is the ultimate circular material
Episode 52. AJ Climate Champions with Hattie Hartman and Joe Jack Williams. To achieve replication at scale, Nicolas Coeckelberghs of Brussels-based BC Materials favours compressed earth blocks over…
Vinu Daniel on transforming mud and waste into architecture
Episode 51. AJ Climate Champions with Hattie Hartman and Joe Jack Williams. Daniel views mud and waste as opportunities, not obstacles. He advocates an approach of ‘maximum optimism’, explaining…
Carmody Groarke’s Sian Ricketts on making bricks from waste
Episode 50. AJ Climate Champions with Hattie Hartman and Joe Jack Williams. Carmody Groarke sustainability lead Sian Ricketts explains how architecture can adapt to the reality of finite resources…
AKTII’s David Watson on how to reduce the environmental impacts of brick
Ep 49. Structural engineer David Watson describes the enduring appeal of brick and its underexploited superpower: reuse Brick has many advantages: durability, aesthetics, use as both envelope and…
‘Over-specification of concrete is an industry addiction’
Episode 48. AJ Climate Champions with Hattie Hartman and Joe Jack Williams. Structural engineer Eva MacNamara of Expedition Engineering explains how we can radically reduce our use of concrete and…
Henning Larsen’s Martha Lewis on how to screen materials for both chemicals and carbon
For the first in a new six-part series on materials, Hattie is joined by co-host Joe Jack Williams to interview Martha Lewis, head of materials at Danish practice Henning Larsen. Lewis argues that a…
‘I’m no longer the wood weirdo,’ says Andrew Waugh
Episode 46. AJ Climate Champions with Hattie Hartman and George Morgan. Andrew Waugh explains how building with timber can address industry transformation at scale. ‘I want to transform the whole…
The Public Practice associates driving retrofit and net zero in the public sector
Episode 45. AJ Climate Champions with Hattie Hartman and George Morgan. Two Public Practice associates explain how working in the public sector has increased their agency as designers. Public…
Je Ahn on setting up Studio Weave and working with found materials
Episode 44. AJ Climate Champions with Hattie Hartman and George Morgan. Studio Weave founding director Je Ahn explains the challenges of sourcing timber from London’s streets and parks. He describes…
Material passports and Architects Declare four years on
Ep 43. AJ Climate Champions with Hattie Hartman and George Morgan. London Eye architect Julia Barfield explains how the climate emergency changed the way her practice, Marks Barfield, operates, as…
Architects must re-educate themselves on timber sourcing
Episode 42. AJ Climate Champions with Hattie Hartman and George Morgan. Montreal-based architect and systems thinker Scott Francisco explains why architects must educate themselves to understand the…
Frequently Asked Questions
AJ Climate Champions has published 63 episodes since October 2020, covering topics in Arts, Design.
AJ Climate Champions is currently sporadic with new episodes every 2 weeks. Average episode length is 42m.
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