PLEA 2028 – in Seville, Spain

Design for the Climate Emergency

The response to climate change represents one of the most consequential challenges of the twenty-first century. The increasing frequency and intensity of extreme climatic events, together with shifts in thermal and precipitation regimes and other environmental parameters, are progressively undermining the operating conditions for which buildings and urban systems were originally conceived. The Intergovernmental Panel on Climate Change (IPCC) has documented compelling evidence that climate impacts on the built environment will intensify, rendering the implementation of adaptation measures imperative.

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PLEA 2026 – Final Remarks

PLEA 2026, San José, Costa Rica

Final Remarks

This conference has reminded us that the mission of PLEA is more important and urgent than ever. The founders of PLEA were true visionaries, and their message remains as relevant today as when the organization was established.

There is already an important body of knowledge on bioclimatic architecture, much of it developed by many in this room. Throughout this conference we have seen advances in research as well as beautiful examples of architecture that go beyond a purely performative vision of sustainability to one that is more human, and responsive to communities in need. We have been reminded that it is not enough to reduce building emissions; we also need to make our buildings more resilient and adapted to climate change.

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PLEA 2026 – Opening Remarks

PLEA 2026, San José, Costa Rica

Opening Remarks

On behalf of the PLEA Board, welcome you all to the 38th PLEA Conference here in beautiful Costa Rica!

Since its inauguration in Miami in 1981, PLEA has grown into a truly global community of researchers, practitioners, educators and students committed to advancing sustainable architecture and urban design. For more than four decades, PLEA has championed climate-responsive design, passive environmental strategies and the responsible stewardship of our built environment—long before sustainability became a global imperative. Today, our network spans more than 40 countries, united by a shared commitment to creating healthier, more resilient and more sustainable places.

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PLEA 2026 Reflexions

PLEA 2026 – Reflexions from the Board

What an inspiring week at #PLEA2026 in San José, Costa Rica!

On behalf of the PLEA Board – Heide Schuster (President), Joana Goncalves (Vice-President), Rajat Gupta (Secretary), Jorge Rodríguez Álvarez, Pablo La Roche and  Susel Biondi – we would like to extend our sincere thanks to the University of Costa Rica, Conference Co-chairs (Mike Smith and Emily Vargas), the Local Organising Committee, volunteers, sponsors, keynote speakers, reviewers, session chairs, students and all participants for making the 38th PLEA Conference on Sustainable Architecture and Urban Design such a memorable and successful event.

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Obituary Willi Weber (1945-2026)

Willi Weber 1944-2026

Willi was an architect and Professor of Building Physics at the University of Geneva in Switzerland. As the director of CUEPE (Centre Universitaire d’Etude des Problemes de l’Energie) between 2000-2008 his research teams collaborated with many other European researchers in a number of pioneering projects. Earlier he had spent a year at the AA Graduate School in London where his amiable personality and sharp critical mind made him a lifelong friend and collaborator in research and environmental design education. Joining PLEA as an Associate Willi was an active and regular participant from the outset, eventually taking on the challenge to organise PLEA 2006 Clever Design, Affordable Comfort: a Challenge for Low Energy Architecture and Urban Planning held in Geneva in September 2006. Fourteen of the research papers presented at that conference became the subjects of Lessons from Vernacular Architecture, a book he edited with Simos Yannas, published in 2013.

He died in March 2026. He will be greatly missed.

By Simos Yannas

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PLEA Day in London – Public Lecture by Poggione+Biondi: Architecture, Landscape and Sustainability – 26th June 2025

Lecture: Poggione+Biondi: Architecture, Landscape and Sustainability

Factory in Piura -northern coast of Peru, by Poggione+Biondi.

By Susel Biondi and René Poggione
26th June, 5.30 to 6.30pm
At the SED Studio
1 Montague Street, WC1B 5BP

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PLEA Day in London or: In between conferences activities

As the PLEA Board of Directors we try to meet on a regulary basis. Most of the meeting are online but we try to meet in person between the conferences once, whenever the overseas directors are in Europe.

This year we have a whole PLEA Day full of activities in London at the Architectural Association. It starts on Thursday 26th of June with an open lecture of our director Susel Biondi.

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PLEA 2026 in Costa Rica

Dear friends of PLEA,

we proudly announce the 2026 PLEA conference which will be held in Costa Rica from 27th to 31st of  JULY 2026.

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PLEA 2024 Reflexions

PLEA folks are getting back into the rhythm of attending live, in person conferences. And thus we traveled to Poland this summer. The PLEA 2024 conference organizers called to Wroclaw in Poland to share, debate and engage in person on a challenging sustainable architecture and urbanism to (Re)thinking resilience, to (re)think together to be an instrument for a change and to make a significant difference together. Online option were mixed in for those not able or willing to travel.

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Obituary Alexandros Tombazis (1939-2024)

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