Ravi Kurani sits down with Josh Dorfman, CEO and host of Supercool, to trace his journey from sustainable furniture startups to co-founding Plantd, a carbon-negative building materials company using renewable grass to replace plywood in homebuilding. Josh shares how Plantd landed a relationship with D.R. Horton (America's largest homebuilder) for 90,000 homes, why he left the CEO role to launch Supercool—a B2B media platform spotlighting real-world climate solutions—and the innovations he's most excited about, from AI-powered HVAC to recycling rare earth magnets. The conversation explores how two former SpaceX engineers moved to North Carolina to grow miscanthus grass and turned it into structural boards that are stronger than plywood in all directions—yet feel identical in a construction worker's hands. Josh breaks down three macro trends proving the low-carbon economy is scaling, spotlights companies like BrainBox AI (cutting building HVAC costs by 25% and carbon by 40%) and Zum (using AI to cut Oakland's school bus fleet from 140 diesel buses to 72 electric ones), and shares the remarkable story of Aeroseal—a 1990s duct-sealing technology shelved for a decade that became a $400M+ company when the right founder came along. In this episode, we discuss: From Furniture to Carbon-Negative Building Materials: Josh's path from running sustainable furniture companies in Brooklyn to co-founding Plantd with two former SpaceX engineers, a company that replaces plywood with boards made from renewable grass, grown by former tobacco farmers in North Carolina.Making Sustainability a Drop-In Replacement: Plantd's boards are designed to feel identical to traditional plywood for construction workers, same density, same nail behavior, so adoption requires zero behavior change. The result: a partnership with D.R. Horton across 90,000 homes.The Low-Carbon Economy is Scaling: Nearly 2,000 climate tech startups have raised Series B or beyond, the world's largest companies are investing heavily in the clean energy transition, and cities are becoming laboratories for climate innovation.AI as a Climate Solution: From BrainBox AI (cutting building HVAC costs by 25% and carbon by 40%, now acquired by Trane) to Zum (using AI to cut Oakland's school bus fleet from 140 diesel buses to 72 electric ones), Josh highlights how AI is accelerating decarbonization across industries.The Rare Earth Recycling Breakthrough: Cyclic Materials is the only company in the world to crack rare earth magnet recycling, attracting investment from Amazon, Microsoft, BMW, and Jaguar, critical for reducing dependence on China's 90% supply chain control.Timing is Everything: The story of Aeroseal: a duct-sealing technology invented in the 1990s, shelved by Carrier for a decade, then revived by a product manager who turned it into a $400M+ revenue company.Connect with the Guest: Josh DorfmanSupercoolFollow Liquid Assets: Website: https://liquidassets.cc/Full Blog Post & Transcript: https://liquidassets.cc/building-houses-from-grass-and-the-rise-of-climate-tech-media-2Host: Ravi KuraniThis episode is sponsored by Hasa, the leader in water treatment solutions for over 60 years. Learn more at https://hasa.com.