Advancing Soil Carbon Measurement for Sustainable Food Systems with Chris Tolles of Yard Stick

Hardware to Save a Planet · 29 Aug 2024 · 42m · Episode 60

What this episode covers

Chris Tolles, Co-Founder and CEO of Yard Stick, explains how his company uses spectroscopy to reduce soil carbon measurement costs by 90%, enabling scalable carbon removal and improved agricultural economics. Tolles details the hardware challenges of integrating commercial spectrometers into durable, handheld field instruments and the critical need for extensive calibration libraries across diverse soil types. He argues that affordable measurement unlocks the economic viability of nature-based solutions for major emitters, contrasting the low cost of soil carbon with the high expense of engineered solutions like Direct Air Capture (DAC).

Other shows on the same ground, closest first.

  • Catalyst · 43m

    The challenges of building a carbon removal portfolio

    Stacy Kauk, Head of Sustainability at Shopify, details the company's $55 million investment in 85,000 tons of durable carbon removal, explaining how they manage a venture-capital-style portfolio of early-stage technologies. She highlights the significant delays in credit delivery caused by permitting hurdles, technological pivots, and the infancy of Measurement, Reporting, and Verification (MRV) methodologies. Kauk argues that while the market aims for a standardized commodity, current buyers must support a diverse mix of engineered systems like Direct Air Capture (DAC) and natural system enhancements like ocean alkalinity to discover viable cost curves and scalability.

  • Catalyst · 51m

    Growing the Carbon Dioxide Removal (CDR) market

    Ryan Orbuch, a partner at Lowercarbon Capital and former lead of Stripe’s carbon removal initiatives, discusses the emerging Carbon Dioxide Removal (CDR) market with host Shayle Khan. They analyze the diverse technologies involved, from biomass to engineered solutions, and critique the current voluntary carbon credit market's lack of rigor regarding permanence and additionality. Orbuch argues for separating the cost of verification from the price of removal to create a credible commodity market and highlights critical bottlenecks like energy consumption and nutrient scarcity.

  • Catalyst · 35m

    How well does soil actually store carbon?

    Eric Slessarev, a staff scientist at Lawrence Livermore National Laboratory, explains the complex science of soil carbon, noting that while agricultural practices like no-till farming and cover cropping can sequester carbon, its durability is uncertain due to microbial breakdown. He highlights that our current understanding of how minerals and microbes interact to stabilize carbon has outstripped the 'first-order' models used in carbon markets, which rely on outdated assumptions about carbon persistence. Slessarev also distinguishes between organic carbon sequestration and enhanced weathering, emphasizing the significant challenges in measuring additionality and ensuring long-term storage.

  • Catalyst · 35m

    Ag residue and carbon removal

    Peter Reinhardt, co-founder and CEO of Charm Industrial, explains why centralized biomass projects fail due to prohibitive logistics costs and low energy density, advocating instead for on-field mobile pyrolysis to convert agricultural residue like corn stover into dense bio-oil. He details how this densification strategy solves the volume-to-weight transport problem, making carbon removal economically viable compared to traditional uses like ethanol or electricity. Reinhardt also discusses the evolution of the carbon removal market, emphasizing the need for extreme transparency and co-benefits to build trust with a diverse buyer base beyond major tech companies.

  • Catalyst · 39m

    Kickstarting a $1 trillion market for carbon removal

    Nan Ransohoff, Stripe’s head of climate, explains how Stripe Climate is using its $100 billion company resources to kickstart a $1 trillion carbon removal market by acting as a buyer of last resort for early-stage technologies. She details Stripe’s procurement criteria, which prioritize permanence, scalability, and a pathway to sub-$100/ton costs, highlighting specific companies like Charm Industrial, Running Tide, Climeworks, and Heirloom. Ransohoff draws parallels between carbon removal and vaccine development, advocating for advanced market commitments to de-risk investment and accelerate the transition from niche solutions to gigaton-scale deployment.

The summary, chapters and topics are generated from the episode’s audio by this directory, not written by Hardware to Save a Planet. The episode itself belongs to its publisher.