# How Green Concrete Is Slashing Carbon With a 3000-Year-Old Recipe

Page: https://stenobird.com/podcast/climate-economics-with-fexingo-carbon-pricing-green-policy-and-sustainability-costs-7871781/how-green-concrete-is-slashing-carbon-with-a-3000-year-old-recipe
Text version: https://stenobird.com/podcast/climate-economics-with-fexingo-carbon-pricing-green-policy-and-sustainability-costs-7871781/how-green-concrete-is-slashing-carbon-with-a-3000-year-old-recipe.md
Podcast: [Climate Economics with Fexingo: Carbon Pricing, Green Policy, and Sustainability Costs](https://stenobird.com/podcast/climate-economics-with-fexingo-carbon-pricing-green-policy-and-sustainability-costs-7871781)
Published: 2026-06-25T19:13:25+00:00
Episode link: https://audio.fexingo.com/business/climate-economics/episode-0073.mp3
Audio file: https://audio.fexingo.com/business/climate-economics/episode-0073.mp3
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JSON: https://stenobird.com/v1/public/podcasts/climate-economics-with-fexingo-carbon-pricing-green-policy-and-sustainability-costs-7871781/episodes/how-green-concrete-is-slashing-carbon-with-a-3000-year-old-recipe
Duration seconds: 574

## Resource

Lucas and Luna explore how the cement industry, responsible for 8% of global CO2 emissions, is turning to an ancient Roman recipe to decarbonize. They break down how a startup called TerraCem is blending volcanic ash and lime to create a concrete that cures like Roman harbor structures, cutting emissions by 70% while matching modern strength specs. The episode dives into the economics: why this 'Roman concrete' costs slightly more than Portland cement today but could become cheaper with a carbon price of just $50 per ton. They also discuss the regulatory tailwind from California's Low-Carbon Concrete Code and why venture capital is suddenly pouring into the space. A concrete case of ancient technology meeting 21st-century climate policy. #RomanConcrete #CementDecarbonization #TerraCem #CarbonEmissions #GreenConstruction #LowCarbonConcrete #CaliforniaBuildingCode #VolcanicAsh #PortlandCement #CarbonPricing #VentureCapital #ClimateTech #Economics #FexingoBusiness #BusinessPodcast #Sustainability #Infrastructure #MaterialsScience Keep every episode free: buymeacoffee.com/fexingo

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