Skip to Content

NEST Podcast: The Future of Construction

NEST is a place where people build, work, live and exchange ideas about the future of construction. A lot of exciting people visit NEST every day. Here they share their ideas, visions and opinions with others and help to advance the building sector. In our series of NEST Podcasts we want to give these people a voice. Peter Richner, Deputy CEO of Empa, talks to his guests about innovation in the construction industry, about opportunities and obstacles and about many other things that drive the construction sector. (The talks are held in German.)
Episode 16: The future of concrete – with Holcim innovation strategist Simon Wiedemann

November 29, 2021 –  Concrete is the most criticized building material, but also the most used. Simon Wiedemann, the guest of the 16th episode of the NEST podcast, operates in this area of tension. He has been working for Holcim for around 20 years and, in his current role as Head Solutions & Products, is responsible for shaping Holcim's global product portfolio in an innovative and sustainable way. In the conversation between Peter Richner and Simon Wiedemann, they talk about different ways of reducing the carbon footprint of concrete, the demand for more ideas from research – and how pilot projects can help to take off.



Episode 15: Blueprint for innovative building - with architect Silvan Oesterle

October 29, 2021 –  In innovative building projects, the role of architects is central and enormously challenging - because they are the ones who pull all the strings. In the fifteenth episode of the NEST Podcast, Peter Richner talks to someone who knows this role inside out: Silvan Oesterle. He is co-founder of the architecture firm ROK, works as a lecturer at the Accademia di architettura di Mendrisio, and is the lead architect in the latest NEST unit STEP2 - which focuses on the marketability of innovations.
In their conversation, the two shed light on how architects can successfully integrate innovations into building projects, why they should no longer see themselves only as software users but also as software developers, and why architecture is "people business".



Episode 14: The aesthetics of PV modules – with designer Lynn Balli

September 22, 2021 – In February 2021, the Lucerne University of Applied Sciences and Arts, together with Empa, organized a design competition. The aim was to create PV modules as design objects. The designs were presented to the public and a jury. The winning project, named "Glasklar", now adorns the façade above the main entrance of the NEST building. In the latest episode of the NEST Podcast, Peter Richner talks to the textile design student whose design convinced the jury: Lynn Balli. In the conversation, the two shed light on how design can make renewable energies more attractive and promote them. In addition, Lynn Balli talks about the challenges she encountered in designing the material, which was rather unusual for her, and how she managed to breathe life into glass.



Episode 13: About life cycles in construction — with Professor Catherine De Wolf
July 29, 2021 – It is well known that the construction sector contributes a large share to global greenhouse gas emissions. In most cases, only the emissions caused by the operation of buildings are considered. However, if we want to achieve our CO2 reduction goals, we have to take into account the entire life cycle, from construction and operation to demolition. In the thirteenth episode of the NEST podcast, Peter Richner talks about this topic with Catherine De Wolf. She has recently been appointed as professor at the ETH Zurich this year and is an expert in circular construction. The conversation also focuses on the crucial factors for implementing the concept of "Re-Use" in the construction sector and on the true price of materials. The talk is held in German at the beginning and then in English.



Episode 12: CO2 law, what's next? — with Gian-Luca Lardi, president of the Master Builder's Association

June 25, 2021 – According to the Swiss Association of Master Builders, modern construction is the most important lever for climate protection because the Swiss building stock is responsible for 45 percent of energy consumption and 24 percent of CO2 emissions. The construction industry can therefore make an important contribution to energy efficiency and the reduction of CO2 emissions. In the twelfth episode of the NEST podcast, Peter Richner talks to Gian-Luca Lardi, President of the Swiss Association of Master Builders, about the CO2 law that was rejected by the Swiss voters, about why replacement buildings need equal rights to energy-efficient renovations, and what the "zero-risk devil" is all about.



Episode 11: The foundation for the next generation – with ETH Rector Sarah Springman

May 27, 2021 – To keep the construction sector moving forward, the foundation laid by colleges and universities is crucial. They must respond to current trends and anticipate future developments in order to equip graduates with the necessary tools for their future careers. In the eleventh episode of the NEST Podcast, Peter Richner welcomes ETH Rector Sarah Springman. The two talk about the major challenges of the pandemic for universities, the importance of getting students excited about technical courses at an early age - and the surgeons of the underground.



Episode 10: Building with the big picture in mind – with architect and engineer Werner Sobek

April 27, 2021 – Calling a spade a spade: That's the first step towards constructive problem solving – even when it comes to the sustainable use of resources and the resulting emissions in construction. In the tenth episode of the NEST podcast, Peter Richner welcomes architect Werner Sobek, a pioneer in sustainable building culture and a man of clear words. Together, the two take a look at the construction industry and beyond, pleading for honesty and transparency in thinking, speaking and acting – and defusing linguistic smoke petards in the process.



Episode 9: Wastewater as a resource – with environmental engineer Tove Larsen

March 25, 2021 – Turn old into new: Not only used materials can be recycled, but resources can also be recovered from wastewater. In the ninth episode of the NEST Podcast, Peter Richner talks with Tove Larsen, environmental engineer and member of Eawag's board of directors, about the impact of innovations in water supply and wastewater management. They speak about what valuable things we flush down the toilet, why problems should be solved directly at the source, and why wastewater does not lie.



Episode 8: The virtuoso interaction of the different spheres of the National Councilor, researcher and entrepreneur Bastien Girod

March 1, 2021 – In order to achieve the change towards a climate-friendly society, it is important that research, business and politics work closely together. In the eighth episode of the NEST Podcast, Peter Richner talks to someone who has been working for climate protection and sustainability in all three spheres for years: Bastien Girod. The two talk about the challenges for a researcher in politics, about the opportunities that arise when you master the keyboard of the different spheres – and about the danger that comes from sorcerer's apprentices.



Episode 7: From dismantling to re-use with Kerstin Müller – a "hunter" for building components

January 29, 2021 – Reusing building materials and entire building components is one possible approach to circular and resource-efficient construction. The architect Kerstin Müller of Baubüro in situ has been advocating this for years, has implemented several lighthouse projects, and is thus familiar with the challenges of re-use. In the 7th episode of our NEST podcast, Peter Richner talks to Kerstin Müller about the hunt for used materials, restrictive standards and laws – and about a dating platform for building components.



Episode 6 with CEO Christian Buhl

December 17, 2020 – Christian Buhl is CEO of the Geberit AG. The globally operating Swiss company is the European market leader for sanitary products. As a graduate physicist and economist, Christian Buhl knows both the research and the industry side. He began his career at Geberit AG in 2009, initially responsible for "Strategic Planning". Since 2015, Christian Buhl has been managing the business of the entire Geberit Group as CEO. In the sixth episode of the NEST Podcast, Peter Richner talks to Christian Buhl about the relevance of innovation in the sanitary sector, the gradually increasing importance of "net zero emissions" for investors, developing countries in the sanitary sector - and black swans in the construction industry.


Episode 5 with business leader Karin Lenzlinger

November 18, 2020 – Karin Lenzlinger managed the family business Lenzlinger Söhne AG for decades until 2019. Located in the Zurich Oberland region, the SME is active in the finishing trade business. Today, Karin Lenzlinger is president of the Zurich Chamber of Commerce and holds several board of directors and executive board mandates in a wide range of industries. In the fifth episode of the NEST Podcast, Peter Richner talks to Karin Lenzlinger about the tension between tradition and innovation in an SME, about the "protected" construction industry - and about the pricking of growing plants.



Episode 4 with architecture professor Fabio Gramazio

October 06, 2020 – Fabio Gramazio is Professor of Architecture and Digital Fabrication at ETH Zurich and is one of the international pioneers of digital construction. Together with his partner Matthias Kohler, he was responsible for the architectural concept of NEST and was also significantly involved in the realization of DFAB HOUSE. In the fourth episode of the NEST podcast, Peter Richner talks to Fabio Gramazio about the resinous path towards a digital building culture, about the dangers of a revolution and the patience required for evolution – and about the complexity of trees.



Episode 3 with TEC 21 Editor-in-Chief Judit Solt

August 20, 2020 – Judit Solt is Editor-in-Chief of TEC21, the leading technical and scientific construction journal in the German-speaking part of Switzerland. As a graduate architect, she also works as a freelance architectural critic, writes articles for newspapers and books and is involved in competition juries and expert commissions. In addition, she is a board member of the "Haus der Farbe" school of design. In the third episode of the NEST Podcast, Peter Richner talks to Judit Solt about the important role of architects in the planning and realisation of buildings, about the difficult relationship of engineers to art - and about criticism of architectural critique.


Episode 2 with Council of States member Damian Müller

July 16, 2020 – Damian Müller (FDP) has been representing the Canton of Lucerne in the Council of States since 2015 and is a member of the Environment, Spatial Planning and Energy Committees ESPEC. In his function, Müller played a key role in the total revision of the CO2 Act. The law has now been discussed by both the Council of States and the National Council and is expected to pass in the autumn session of 2020. In this second episode of the NEST podcast, Peter Richner talks to Damian Müller about the coupling of buildings and mobility for CO2 reduction, about the demands of politics towards research - and about underground cities.


Episode 1 with SIA president Stefan Cadosch

June 8, 2020 – Stefan Cadosch is president of the Swiss Society of Engineers and Architects SIA and owner of an architectural office. The SIA has over 16'000 members and represents the interests of architects and engineers in politics and society. The SIA is also known for its important body of standards. It develops, maintains and publishes numerous standards, regulations, guidelines, recommendations and documentation that are of vital importance for the Swiss construction industry. In the first episode of NEST Podcasts, Peter Richner talks to Stefan Cadosch about the tension between standardization and innovation, about hypes in architecture – and about expensive violins.


Subscribe to podcast



You would like to be informed about new episodes of the NEST Podcast? Subscribe here:

Quick Access

The latest EmpaQuarterly:
Focus: Energy revolution