Reviewer 2 does geoengineering

00:52:29

Internationalisation of CDR Markets - Lashof

Reviewer 2 does geoengineering ·

2026/10/09

In this episode of Reviewer 2 Does Geoengineering, @geoengineering1 speaks with Daniel Lashof of the World Resources Institute (WRI) about the internationalisation of carbon dioxide removal markets and the policies needed to scale carbon removal globally.Lashof discusses how US policy support, including the 45Q tax credit and the 2022 Inflation Reduction Act, helped stimulate investment in carbon removal startups, and how subsequent policy reversals under President Trump have affected market growth

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00:53:03

How Much CO₂ Can Enhanced Weathering Really Remove? -...

Reviewer 2 does geoengineering ·

2026/09/28

Cornell University geochemist Louis Derry joins @geoengineering1 to discuss a fundamental question for enhanced rock weathering: how much of the alkalinity generated in soils actually makes it through watersheds to the ocean? Derry argues that many studies and commercial MRV approaches focus on the top 10-30 cm of soil, potentially missing critical processes along the full flow path, including ion exchange in acidic soils, secondary clay formation, acidity generation and carbonate precipitation,

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00:55:10

Extratropical Cyclones and Storm Track Responses to...

Reviewer 2 does geoengineering ·

2026/09/18

@geoengineering1 interviews Claudia Elisabeth Wieners and Meike de Nooij about extratropical cyclones, the winter storm systems that drive much of the weather variability and many extreme wind and precipitation events in the midlatitudes, and how stratospheric aerosol injection (SAI) could alter their tracks and associated weather extremes.They discuss what makes extratropical cyclones different from tropical cyclones, why SAI could affect storm tracks, and what their high-resolution modelling

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01:12:26

Suicide Impacts of SRM - Tanaka

Reviewer 2 does geoengineering ·

2026/08/31

Could reducing sunlight to cool the planet also affect mental health? @geoengineering1 interviews Shinsuke Tanaka about new research examining the link between sunlight and suicide and what it could mean for solar radiation management (SRM).Using nearly three decades of U.S. county-month data, Tanaka and colleagues find that sustained reductions in sunlight significantly increase suicide rates. They estimate that a 1.5°C SRM scenario could result in around 3,810 additional U.S. suicides between 2030

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01:01:03

Influence of Surface Roughness on ERW - Kukla

Reviewer 2 does geoengineering ·

2026/08/18

How much carbon can enhanced rock weathering actually remove? In this episode, @geoengineering1 talks with Tyler Kukla of CarbonPlan about how assumptions about rock surface roughness can dramatically change enhanced weathering estimates.They discuss why surface area is critical to weathering rates, how commonly used roughness calculations can overestimate available surface area, and what this means for modeled CO₂ removal. The conversation also explores the differences between surface-area- and

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00:52:37

Aerosol Warming Over Bright Surfaces - Kapoor

Reviewer 2 does geoengineering ·

2026/08/14

@geoengineering1 interviews Taveen Kapoor about his study [preprint] showing that purely scattering stratospheric aerosols can produce positive shortwave radiative forcing, and localized warming, over high-albedo surfaces such as snow, ice, and deserts. They discuss how diffuse light reflected from bright surfaces travels farther through the aerosol layer, increasing the likelihood of backscattering toward the surface.They also discuss why multi-angle radiative-transfer calculations reveal stronger

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00:50:04

Viridas Pressurised DAC, El-Sayed

Reviewer 2 does geoengineering ·

2026/05/15

In this episode, @geoengineering1 speaks with Ahmed El-Sayed of Viridas Technologies, a company aiming to revolutionize Direct Air Capture (DAC) by redesigning the process from the ground up, including the fan system itself.The conversation explores why DAC remains expensive, largely due to the extremely low concentration of CO2 in ambient air. While most research focuses on developing new solvents and materials to reduce energy use, Ahmed argues that the thermodynamic limits of capture efficiency

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00:50:31

Avantium: Engineering Sorbents for DAC - Wessels

Reviewer 2 does geoengineering ·

2026/04/16

@geoengineering1 interviews Rudolf Wessels, Director of Technology and Innovation at Avantium R&D Solutions in the Netherlands (founded in 2000 as a Shell spin-out). The discussion examines Avantium’s contribution to advancing Direct Air Capture (DAC) through high-throughput experimentation platforms designed to accelerate the discovery and optimization of sorbent materials, enabling rapid, parallel testing under controlled conditions.Wessels also discusses the company’s recent collaboration

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01:14:27

Sustaera - electric DAC

Reviewer 2 does geoengineering ·

2026/04/04

@geoengineering1 interviews Cory Sanderson, CTO and co-founder of Sustaera, a North Carolina-based Direct Air Capture (DAC) startup focused on low-cost carbon capture, separations chemistry, and process scale-up.Sanderson traces his journey from Air Products, where he worked on vacuum swing adsorption CO₂ capture for an SMR hydrogen plant and encountered economic and infrastructure constraints, to founding Sustaera. He also explains the company’s shift from CO₂-to-methane materials, which depended

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00:46:21

Climefi - supporting CDR buyers

Reviewer 2 does geoengineering ·

2026/03/20

@geoengineering1 interviews Paolo Piffaretti, co-founder of ClimeFi (https://www.climefi.com/), on how durable carbon dioxide removal (CDR) credits are verified and delivered for corporate buyers.ClimeFi acts as a buyer-side agent, helping organizations define contribution vs. compensation goals, run reverse-auction RFPs, build diversified portfolios, conduct due diligence, negotiate contracts with risk-mitigation clauses, and monitor suppliers through delivery.They also unpack how CDR deals work in

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01:19:00

Comparing SRM and Opioids - Clark

Reviewer 2 does geoengineering ·

2026/01/24

In this episode, @geoengineering1 is joined by Britta Clark, a postdoctoral researcher at Harvard University, to unpack why solar geoengineering is increasingly compared to opioids. They discuss how this framing casts SRM as temporary “relief” from climate warming and why it raises concerns about potentially slowing emissions cuts. The conversation focuses on how climate models, policy debates, and public discourse can quietly shift expectations about how fast emissions reductions should happen once

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01:23:46

Malaria Trends and SRM - Hussain

Reviewer 2 does geoengineering ·

2026/01/09

In this episode, @geoengineering1 interviews Athar Hussain, physicist and professor of atmospheric science at COMSATS University, Pakistan, about his recent study examining how SAI could influence malaria transmission across South Asia. Using the VECTRI malaria model, the research compares an unmitigated high-emissions pathway (RCP8.5) with the GLENS-SAI scenario, which stabilizes global temperatures at 2020 levels, across seven countries: Afghanistan, Bangladesh, Bhutan, Iran, India, Nepal, and

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01:11:52

Adaptation vs Geoengineering - Gambill

Reviewer 2 does geoengineering ·

2025/12/22

@geoengineering1 interviews Paul Gambill to discuss the intricate dynamics between adaptation and geoengineering. Drawing on his experience as the former founder of Nori, the first carbon removal marketplace, Paul reflects on why scaling durable carbon removal has proven so difficult and what those barriers suggest for stabilizing the climate in an era of overshoot. The conversation then turns to the growing relevance of geoengineering approaches, including solar radiation management (SRM) and other

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01:12:58

Festive snowy forests - D'Souza

Reviewer 2 does geoengineering ·

2025/12/13

What could be more festive than carbon storage in snowy evergreen forests?@geoengineering1 interviews Kevin Bradley D'Souza, a postdoctoral researcher at the University of Waterloo, about the real climate potential of reforesting Boreal forests. Kevin explains the crucial role these forests play in carbon storage, biodiversity, and permafrost protection, while noting that reforestation in the Boreal comes with important challenges. The conversation explores key factors such as albedo effects,

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00:59:57

Distributing solid aerosols - Hack

Reviewer 2 does geoengineering ·

2025/11/09

Miranda Hack provides an in-depth look at the often-overlooked engineering and logistical barriers to large-scale deployment of solid particles for stratospheric aerosol injection (SAI). She explains how dispersing sub-micron mineral particles at altitude, including challenges like agglomeration, complex nozzle flows, and supply-chain constraints, introduces significant uncertainties and costs. These challenges may reduce cooling efficiency and narrow the design space for “low-risk” SAI strategies,

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00:43:38

SRM hoses - Hyde

Reviewer 2 does geoengineering ·

2025/10/04

Roderick Hyde discusses his recent paper on using high-altitude hoses for solar geoengineering. While most proposals focus on aircraft delivery, Hyde revisits an older but largely dismissed concept. He describes suspending a 20 km hose by balloons to continuously pump sulfur-bearing fluids into the stratosphere, and argues that advances in modern materials and engineering may overcome past barriers.The conversation covers the technical hurdles such as wind dynamics, hose stability, extreme

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00:56:12

More Moore - polar SRM research

Reviewer 2 does geoengineering ·

2025/10/01

John Moore joins the podcast to discuss his recent Viewpoint article responding to Siegert et al.’s paper on polar geoengineering. While Siegert and colleagues argue that proposed interventions are infeasible, environmentally dangerous, and a distraction from decarbonization, Moore contrasts the prevailing “consequences-based paradigm” (raising alarms to spur actions) with a new “compassionate harm reduction paradigm” that calls for exploring all potential tools including geoengineering rather than

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00:58:23

SRM's socioeconomic cost - Bronsther & Xu

Reviewer 2 does geoengineering ·

2025/08/25

Jacob Bronsther & Yangyang Xu discuss their recent paper on the socioeconomic costs of Solar Radiation Modification. While SRM’s direct technical costs appear modest (~$18B/°C cooling), the authors argue that its broader costs are far greater. They estimate that Stratospheric Aerosol Injection could generate between $0 and $809 billion annually in side-effect harms, with potentially higher figures for Marine Cloud Brightening. The conversation also explores SRM’s reliance on unprecedented global

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00:36:19

SAI can weaken CO2 greenhouse effect - Soden

Reviewer 2 does geoengineering ·

2025/08/14

Brian Soden discusses his recent study on injecting absorptive aerosols, such as black carbon, into the upper stratosphere to weaken the CO₂ greenhouse effect. The conversation addresses the radiative physics underpinning this concept, its potential cooling efficiency relative to conventional scattering aerosols, and associated environmental risks. While model results indicate the method could theoretically be effective, Soden remains sceptical about its practical viability.Paper: He, H., Soden, B

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00:43:52

SRM moratoria - Bodansky

Reviewer 2 does geoengineering ·

2025/06/30

Daniel Bodansky discusses his recent article on the drawbacks of a global moratorium on solar radiation management deployment.The conversation critiques whether a moratorium is feasible or effective, arguing it could hinder critical research, be difficult to enforce, and unintentionally become a proxy for a permanent ban. Instead, the discussion highlights the need for more research and stronger governance frameworks to better understand and responsibly manage geoengineering.Article: Biniaz, S.,

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