Politicians, Pandemics and PM2.5: Turning Air Quality Science Into Policy - Lydia Morawska

This week, we sit down with **Professor Lidia Morawska**, one of the world's leading voices in air quality science and airborne infection transmission, to explore a question that fundamentally challenges how we think about progress in indoor air quality: **What if the single biggest barrier to transforming the built environment isn't our lack of scientific knowledge—but our inability to convert public health crises into sustained political action before society forgets the urgency?** **Key Topics Discussed:** - **The Open Letter That Changed Everything:** On the last Saturday of March 2020, the WHO Director General tweeted that COVID-19 was not airborne. Within three days, Lidia organized 36 leading scientists to write to the WHO. Within an hour of sending the letter, Geneva called. The conversation was defensive, not collaborative. It took three months of strategic media engagement and publication in a top journal before the WHO acknowledged airborne transmission the next day. - **The P-Block Blueprint:** Lidia's team is transforming an existing building at Queensland University of Technology into the first building in the world to meet proposed indoor air quality standards. The project monitors PM2.5, carbon monoxide (in combustion spaces), and CO2 as a proxy for infection transmission and ventilation effectiveness. An AI optimisation platform will automatically instruct building management systems to balance indoor air quality, thermal comfort, and energy efficiency without human intervention. **GUEST:** https://www.linkedin.com/in/lidia-morawska-5461519/ https://www.indoorair2026.org/ The **Air Quality Matters** Podcast in Partnership with Particles Plus https://particlesplus.com/ Eurovent (https://www.eurovent.eu/) - Aico (https://www.aico.co.uk/) - Lindab (https://www.lindab.ie/) - S&P UK (https://www.solerpalau.com/en-uk/) The **One Take Podcast** in Partnership with SafeTraces (https://www.safetraces.com/) - Inbiot (https://www.inbiot.es/?utm\campaign=simon&utm\source=airqualitymatters&utm\_medium=podcast) - Farmwood (https://farmwood.co.uk/) - iE Electronics (https://www.eielectronics.ie/) and iAir Group (https://iair-group.com/) Do check them out in the links and on the Air Quality Matters Website. (https://www.airqualitymatters.net/podcast) If you haven't checked out the YouTube channel its here (https://www.youtube.com/@airqualitymatters-SimonJones). Do subscribe if you can, lots more content is coming soon. ### Chapters - **00:00:00** Introduction: Meeting Lydia Mirowska and the Prime Minister's Prize for Science - **00:02:24** The Shifting Audience: From Ignored Experts to Listened-To Advocates - **00:04:38** Historical Patterns: When Events Force Air Quality Into Public Consciousness - **00:07:53** The Visibility Problem: Why Indoor Air Quality Remains Abstract and Invisible - **00:08:38** Leveraging Crisis Moments: The Strategy of Incremental Regulatory Progress - **00:10:10** Beyond Pandemics: The Everyday Burden of Respiratory Infections and Air Pollution - **00:11:34** Country by Country: Understanding Different Regulatory Systems and Pathways - **00:13:38** Working With Politicians: Solutions Not Just Problems - **00:19:03** The Scale of Change: Learning From Water Infrastructure History - **00:21:09** The Cost of Inaction: Why Not Fixing Air Quality Is More Expensive - **00:22:22** The Low-Cost Sensor Revolution: Making Air Quality Visible for Everyone - **00:26:58** The Advocacy Balance: When Passion Meets Complexity - **00:29:27** The Simplicity Paradox: Complex Science But Straightforward Building Solutions - **00:32:33** From Individual Responsibility to Building Standards: The Water Analogy - **00:34:03** Agency and Automation: Balancing Control With Proper Building Performance - **00:36:33** Education Gap: Why Air Quality Isn't in School Curriculum or Medical Textbooks - **00:37:41** Air Quality as the Perfect Teaching Subject: Engaging Every Student - **00:39:25** The Medical Community Gap: When Doctors Never Ask About Home Environment - **00:43:54** The Open Letter to WHO: How 36 Scientists Changed Global Pandemic Response - **00:51:44** The Airborne Battle: Science Versus Institutional Resistance at WHO - **00:53:49** Understanding WHO's Position: Medical Terminology and Institutional Fear - **01:00:23** The MPOX Response: Why We're Still Hesitant on Airborne Transmission - **01:06:23** P-Block Project: Building the World's First Indoor Air Quality Standard Building - **01:09:04** The Three-Pollutant Standard: PM2.5, Carbon Monoxide, and CO2 as Proxy - **01:12:07** The Sensor Readiness Question: Why These Pollutants and Not Others - **01:12:48** The PM2.5 Debate: Composition Complexity Versus Epidemiological Consistency - **01:20:53** The VOC Conundrum: Source Control Over Measurement - **01:23:16** The Radon Scandal: When Science Is Resolved But Nothing Changes - **01:29:16** The Ireland Radon Crisis: One in Five Homes Above Threshold in Red Zones - **01:34:28** Closing Vision: From Advocacy to Implementation in Five Years