Reviewer 2 does geoengineering
Episodes
Avantium: Engineering Sorbents for DAC - Wessels
16 Apr 2026
Contributed by Lukas
@geoengineering1 interviews Rudolf Wessels, Director of Technology and Innovation at Avantium R&D Solutions in the Netherlands (founded in 2000 as...
Sustaera - electric DAC
04 Apr 2026
Contributed by Lukas
@geoengineering1 interviews Cory Sanderson, CTO and co-founder of Sustaera, a North Carolina-based Direct Air Capture (DAC) startup focused on low-cos...
Climefi - supporting CDR buyers
20 Mar 2026
Contributed by Lukas
@geoengineering1 interviews Paolo Piffaretti, co-founder of ClimeFi (https://www.climefi.com/), on how durable carbon dioxide removal (CDR) credits ar...
Comparing SRM and Opioids - Clark
24 Jan 2026
Contributed by Lukas
In this episode, @geoengineering1 is joined by Britta Clark, a postdoctoral researcher at Harvard University, to unpack why solar geoengineering is in...
Malaria Trends and SRM - Hussain
09 Jan 2026
Contributed by Lukas
In this episode, @geoengineering1 interviews Athar Hussain, physicist and professor of atmospheric science at COMSATS University, Pakistan, about his ...
Adaptation vs Geoengineering - Gambill
22 Dec 2025
Contributed by Lukas
@geoengineering1 interviews Paul Gambill to discuss the intricate dynamics between adaptation and geoengineering. Drawing on his experience as the for...
Festive snowy forests - D'Souza
13 Dec 2025
Contributed by Lukas
What could be more festive than carbon storage in snowy evergreen forests?@geoengineering1 interviews Kevin Bradley D'Souza, a postdoctoral researcher...
Distributing solid aerosols - Hack
09 Nov 2025
Contributed by Lukas
Miranda Hack provides an in-depth look at the often-overlooked engineering and logistical barriers to large-scale deployment of solid particles for st...
SRM hoses - Hyde
04 Oct 2025
Contributed by Lukas
Roderick Hyde discusses his recent paper on using high-altitude hoses for solar geoengineering. While most proposals focus on aircraft delivery, Hyde ...
More Moore - polar SRM research
01 Oct 2025
Contributed by Lukas
John Moore joins the podcast to discuss his recent Viewpoint article responding to Siegert et al.’s paper on polar geoengineering. While Siegert and...
SRM's socioeconomic cost - Bronsther & Xu
25 Aug 2025
Contributed by Lukas
Jacob Bronsther & Yangyang Xu discuss their recent paper on the socioeconomic costs of Solar Radiation Modification. While SRM’s direct technica...
SAI can weaken CO2 greenhouse effect - Soden
14 Aug 2025
Contributed by Lukas
Brian Soden discusses his recent study on injecting absorptive aerosols, such as black carbon, into the upper stratosphere to weaken the CO₂ greenho...
SRM moratoria - Bodansky
30 Jun 2025
Contributed by Lukas
Daniel Bodansky discusses his recent article on the drawbacks of a global moratorium on solar radiation management deployment.The conversation critiqu...
Mixed phase cloud thinning - Villanueva
31 May 2025
Contributed by Lukas
Diego Villanueva discusses his paper on mixed-phase regime cloud thinning (MCT). This geoengineering approach involves using ice-nucleating particles ...
CIRCEO: On-Ship CDR - Bardinet
23 May 2025
Contributed by Lukas
@geoengineering1 interviews Fabien Bardinet, co-founder of CIRCEO [linkedin.com/company/circeocc], a new company focused on marine-based carbon captur...
Risk-risk trade-offs - Felgenhauer
10 May 2025
Contributed by Lukas
Tyler Felgenhauer and @geoengineering1 discuss risk-risk trade-offs. Paper: Tyler Felgenhauer, Govindasamy Bala, Mark E Borsuk, Inés Camilloni, Jona...
SRM, US & China - Nielsen
04 May 2025
Contributed by Lukas
Jeffrey Nielsen and @geoengineering1 discuss how the strategic relationship between the US and China will interact with SRM. Paper: Jeffrey Nielsen,...
Solar thermal DAC - Prats Salvado
24 Apr 2025
Contributed by Lukas
Enrico Prats Salvado discusses the benefits and challenges of using the sun's heat for DAC desorb. Paper Prats-Salvado, E., Monnerie, N. & Sattler...
Water alternating gas injection - Nelson (&dog)
13 Apr 2025
Contributed by Lukas
Claire Nelson, founder of Cella mineral storage, explains how underground injections of water alternating with CO2 might aid mineralsation. Paper: Wat...
Biotech in CDR - Reginato
22 Mar 2025
Contributed by Lukas
Paul Reginato explains how biotech can be applied to CDR. Paper: Biotechnology in direct air capture, enhanced weathering, and methane removal: emergi...
Get in the sea! Sinkco x Riverse — Boehman & Dorr
18 Mar 2025
Contributed by Lukas
Can we just throw carbon in the sea - like a mobile phone with incriminating evidence on? Brenna Boehman and Erica Dorr from Sinkco and Riverse come o...
Octavia carbon, Kenyan DAC - Freimüller
07 Mar 2025
Contributed by Lukas
Martin Freimüller introduces Octavia Carbon, explaining how they're making DAC work in Kenya's Great Rift Valley. Hosted by @geoengineering1
Calychar hydrochar - Suleman
27 Feb 2025
Contributed by Lukas
Smoggies Humbul (Suleman), Omar, and Faizan discuss their research detailed in this press release https://www.tees.ac.uk/sections/news/pressreleases_s...
COVID policy vs SRM policy - Patrick
23 Feb 2025
Contributed by Lukas
Can COVID policy be compared to geoengineering policy? Hosea Olayiwola Patrick discusses "Reflections on COVID-19 Adaptive Responses as a Template for...
Sky whitening - Lemon
08 Feb 2025
Contributed by Lukas
Would a whiter sky be noticeable, under SAI geoengineering? Ansar Lemon discusses what humans and animals could see. Paper: Under a not so white sky: ...
OAE legality - Murthy
12 Jan 2025
Contributed by Lukas
Are you allowed to throw alkaline minerals into the sea? Ashwin Murthy explains how to do Ocean Alkalinity Enhancement, without ending up in jail. As...
SRM experts' opinions - McEvoy
05 Jan 2025
Contributed by Lukas
David McEvoy discusses expert opinions on SRM. What do they think, and how do we know? The strategic and governance implications of solar radiation mo...
Historic emissions & CDR - Hahn
28 Dec 2024
Contributed by Lukas
Thomas Hahn discusses his paper on historical emissions and responsibility for them. Hahn, T., Morfeldt, J., Höglund, R. et al. Estimating countries’...
Andean glaciers & SRM - Fernandez
12 Dec 2024
Contributed by Lukas
Is it too late for SRM to save South American glaciers? Alfonso Fernandez discusses his paper on the impact of SRM on the glaciers of the Andes. Fern...
AGU SRM research ethics - Felgenhauer
29 Nov 2024
Contributed by Lukas
AGU Ethical Framework Principles for SRM research Tyler Felgenhauer, Duke University https://news.agu.org/press-release/ethical-framework-climate-in...
Gentoo.earth - Kirby
18 Nov 2024
Contributed by Lukas
Juliet Kirby explains how gentoo.earth uses AI to match carbon removal buyers and sellers. Despite @geoengineering1 trying his best to wind her up for...
Direct climate cooling overview - Baiman
10 Nov 2024
Contributed by Lukas
Ron Baiman discusses his expansive paper summarising all known SRM and other direct climate cooling techniques https://academic.oup.com/oocc/article/...
SRM ethics - Hofbauer
30 Oct 2024
Contributed by Lukas
Benjamin Hofbauer discusses 3 papers from his PhD, on the ethics of Solar geoengineering. Hofbauer, B. (2023). Systemic risks and solar climate engi...
Grain size in OAE - Moras
23 Oct 2024
Contributed by Lukas
Charly Moras explains how grain size affects reaction kinetics in ocean alkalinity enhancement. Paper:- Effects of grain size and seawater salinity on...
Is OIF undead? - Buesseler
15 Oct 2024
Contributed by Lukas
In this spooky Halloween episode, @geoengineering1 and Ken Buesseler investigate alleged sightings of Ocean Iron Fertilisation - which is rumoured to ...
Is cirrus thinning dead? Jeggle
06 Oct 2024
Contributed by Lukas
Kai Jeggle explains to @geoengineering1 how off-target effects of cirrus cloud thinning mean that it can never be used effectively. Paper; Jeggle, K.,...
Wood Vaulting - Zeng
28 Sep 2024
Contributed by Lukas
Got wood? Looking for somewhere to stick it? Ning Zeng can solve your problem! @geoengineering1 learns all about how to do it properly. Zeng, N., Hau...
Coastal enhanced weathering - Geerts
21 Sep 2024
Contributed by Lukas
Do not adjust your set; the fidelity of this recording is particularly poor. Luna Geerts and @geoengineering1 discuss coastal enhanced weathering of o...
Near term Arctic SRM - Wake Smith
15 Sep 2024
Contributed by Lukas
What would a mid-century polar geoengineering program look like? What airports and aircraft would be needed - and at what cost? Wake Smith answers all...
Extra-tropical cyclones - Reboita
04 Jul 2024
Contributed by Lukas
How does SAI affect extra-tropical cyclones? Michelle Simões Reboita explains during a tight interview slot, but @geoengineering1 fails to understand...
Controlling MCB - Walker Lee Part 1
12 May 2024
Contributed by Lukas
What control can we exercise over MCB? Should it be confined to small, climatically sensitive areas - or expanded at great cost, to minimise inter-reg...
Disability & ideological diversity in academia - Walker Lee, Part 2
12 May 2024
Contributed by Lukas
We've extracted this very interesting discussion from Walker Lee's new episode, because a) it's a standalone section and b) the main episode was alrea...
Warm pool & SAI - Günther (FIXED)
04 May 2024
Contributed by Lukas
Moritz Günther tries valiantly to get @geoengineering1 to understand the atmospheric dynamics of SAI's impacts on the warm pool, but it's rather like...
SAI and international conflict - Morrissey
16 Apr 2024
Contributed by Lukas
William Morrissey explains how SAI could lead to conflict and counter-geoengineering. @geoengineering1 isn't convinced it will all end so badly. Avoi...
Mass participation OAE tests - Bach
13 Apr 2024
Contributed by Lukas
Roll up! Roll up! Grab your buckets, and get ready to do a science! Bach is back (again) to discuss institutional collaboration and citizen science in...
Holocene DAC, chemistry & biz - Timofte
07 Apr 2024
Contributed by Lukas
How do you establish and grow a DAC company? Anca Timofte has utilised a career leg-up from Climeworks to start her own DAC outfit, with some pretty f...
Who gets to use CDR? - Bellona; Paul
06 Apr 2024
Contributed by Lukas
Is the supply of carbon removal fundamentally limited, and how should it be allocated? Comrade Allanah Paul from Bellona sends @geoengineering1 to the...
Olivine ecotoxicity - Flipkens
02 Apr 2024
Contributed by Lukas
Gunter Flipkens explains why everyone is worried about heavy metals leaching from olivine coastal weathering experiments. Then he explains how he test...
MCB with drones - Claudel
12 Mar 2024
Contributed by Lukas
Christian Claudel comes on to explore the issues around using drones to distribute MCB particles. These are made by anti-solvent precipitation (much l...
Littoral weathering & academic culture - Fuhr
12 Mar 2024
Contributed by Lukas
Michael Fuhr gives @geoengineering1 news on what happens when you throw rocks in the sea (yawn). Then they go on a massive rant about how Gen Z academ...
Future of CDR - Hoglund
09 Mar 2024
Contributed by Lukas
What could be the eventual scale of the CDR market? What technologies will it use? And how do choices made today affect where it ends up? Robert Hoglu...
Stratospheric dehydration - Schwarz
08 Mar 2024
Contributed by Lukas
Joshua Schwarz explains how dispersing ice nucleating particles in one tiny region of the tropical tropopause layer off Northern Australia can address...
Messing with nature - Woodhouse
22 Jan 2024
Contributed by Lukas
What is nature? Does it matter beyond its direct usefulness? Do animals only have rights if they're conscious? When did man become morally responsible...
Agent based models - Perkins
19 Jan 2024
Contributed by Lukas
NPC vs IAM. Oliver Perkins explains why simple agent-based models (non playable characters, if you like) might outperform the integrated assessment mo...
Sorbents for all seasons - Jones
09 Jan 2024
Contributed by Lukas
The highly prolific Chris Jones thoroughly intimidates the normally boisterous @geoengineering1, while discussing sorbents that can tolerate a wide ra...
Blue carbon - Reithmaier
03 Jan 2024
Contributed by Lukas
Gloria Reithmaier talks to @geoengineering1 about coastal blue carbon, work/life balance, and being a mum in academia. Paper: Reithmaier, G.M.S., Cabr...
Festive Holly (Jean Buck)
25 Dec 2023
Contributed by Lukas
Celebrate Xmas day with Holly, discussing Solar geoengineering research in the global public interest: A proposal for how to do it https://www.science...
How to support a sunshade - Maheswaran
23 Dec 2023
Contributed by Lukas
How can you make a sunshade stay in place? How can you make it beam down solar power to Earth? @geoengineering1 finds out from Tharshan Maheswaran. P...
Ethics of Volcano Geoengineering - Cassidy
13 Dec 2023
Contributed by Lukas
Should the army be allowed to blow people up with a volcano? If your geothermal power plant triggers an eruption, is that just a risk of doing busines...
HPAC takeover! Overshoot commission - Field
21 Nov 2023
Contributed by Lukas
"Good afternoon, Reviewer 2 listeners. Some of us at the Healthy Planet Action Coalition (www.healthyplanetaction.org) have noticed that a few months ...
Pinatubo’s effect on ozone - Peng
28 Oct 2023
Contributed by Lukas
Want to know *exactly* how Pinatubo affected ozone? After a marathon 6h edit, @geoengineering1 has finally managed to get this Yifeng Peng interview s...
Cloud seeding law - Simon
28 Oct 2023
Contributed by Lukas
Manon Simon discusses her thesis on the legal overlap between cloud seeding and MCB. What can we learn and apply from decades of cloud seeding regulat...
"Year of the slags" - Bullock
20 Oct 2023
Contributed by Lukas
Liam Bullock talks about his Horizon-funded work on slags, tailings and overburden. How can these different wastes be used for CO2 removal? Internatio...
Can we trust SRM papers? Reynolds
29 Sep 2023
Contributed by Lukas
Jesse Reynolds shows how many SRM papers overestimate risks and underestimate benefits. Paper: "Communication of Solar Geoengineering Science: Forms, ...
Does SRM's location affect global temperature? Zhang
25 Sep 2023
Contributed by Lukas
The Radiative Forcing Pattern Effect on Climate Sensitivity https://essopenarchive.org/users/535851/articles/655683-the-radiative-forcing-pattern-effe...
Seaweed fertilizers (and a kelp violin) - Sheppard
21 Sep 2023
Contributed by Lukas
Emily Sheppard talks about how the nutrients used by seaweed affect its usefulness for CDR. She then plays a violin made of seaweed. Paper: https://o...
Who pays for historic CDR? Torvanger
09 Sep 2023
Contributed by Lukas
How can countries share the cost of cleaning up historic emissions? A croaky Reviewer 2 finds out from Asbjørn Torvanger. What If Country Commitments...
Which US states will do CDR? Clarens
06 Sep 2023
Contributed by Lukas
Andrés Clarens discusses how the CDR industry will spread throughout the US. Paper: Regional implications of carbon dioxide removal in meeting net ze...
Space Spiders Save The World (really)
25 Aug 2023
Contributed by Lukas
Two guests (with extremely complicated names) discuss the ludicrousest, amazingest paper we've ever had on the show. Yes, they're seriously asking: ca...
Bach is back! Air/sea CO2 exchange
13 Aug 2023
Contributed by Lukas
Lennart Bach returns to discuss his modelling paper on ocean / atmosphere exchange of CO2 with @geoengineering1. Also included is enlightening discuss...
Mineral dust & geoengineering analogues - Kok
02 Aug 2023
Contributed by Lukas
How does mineral dust affect the climate? (Slight cooling, but it's complicated) What do background variations in dust levels teach us about the likel...
Aerosol plume modelling - Sun
30 Jul 2023
Contributed by Lukas
How do you model aerosol dispersal from an aircraft? Then, how do you integrate that into a climate model? Hongwei Sun explains his thesis to @geoengi...
BeZero: ratings agencies & CDR careers - Harvey
26 Jul 2023
Contributed by Lukas
How do ratings agencies work? How can you get into the lucrative and rewarding commercial CDR sector? Victoria Harvey from BeZero makes @geoengineerin...
African farms & rock weathering - Boudinot
14 Jul 2023
Contributed by Lukas
Garrett Boudinot (@FGBoudinot) of @vycarb schools @geoengineering1 on the challenges and opportunities of deploying ERW in Africa and India. Paper: "E...
Biochar stability - Hagemann
26 Jun 2023
Contributed by Lukas
What gives biochar its stability? How dependable is its carbon sequestration in soil? How can we optimise its source materials and manufacturing proce...
Trapping CO2 into synthetic salts - Yavuz
15 Jun 2023
Contributed by Lukas
Cafer Yavuz explains his revolutionary process for locking CO2 up into an inexpensive solid salt matrix, which allows it to be stored and transported ...
Arctic geoengineering - Duffey
13 Jun 2023
Contributed by Lukas
Alistair Duffey picks up the baton from Madelyn Hotaling's previous episode. He gives further comparison of several polar geoengineering technologies:...
Parallel Carbon's ambient electrolysis DAC - Anderson
10 Jun 2023
Contributed by Lukas
Ryan Anderson explains how Parallel Carbon calcines limestone at ambient temperature, using a membrane-free aqueous electrolysis process. Could this e...
Arctic ice management - Hotaling
31 May 2023
Contributed by Lukas
Madelyn Hotaling effortlessly bats away a particularly gruesome inquisition from @geoengineering1, defending her work on arctic ice management. FYI pa...
Single hemisphere SRM & monsoons - Bala
17 May 2023
Contributed by Lukas
Bala schools @geoengineering1 on the mechanisms behind the monsoon (Inter Tropical Convergence Zone, Indian Ocean Dipole, etc.), then explains what mi...
Marine CDR myths - Rohling
10 May 2023
Contributed by Lukas
Eelco Rohling debunks some common myths about marine CDR. Paper: Marine methods for carbon dioxide removal: fundamentals and myth-busting for the wide...
Surface albedo modification & heat islands - Feinberg
02 May 2023
Contributed by Lukas
Alec Feinberg compares SAI with surface albedo modification, CDR, and space mirrors. In a rare moment of clarity, @geoengineering1 notices he isn't ke...
Which nation will lead research? Horton
30 Apr 2023
Contributed by Lukas
Joshua Horton (@JoshuaHorton533) tells @geoengineering1 which nations will dominate SRM research. Paper "Solar geoengineering research programs on nat...
Scaling zeolite DAC, Removr - Tyssen
20 Apr 2023
Contributed by Lukas
Einar Tyssen from removr.no talks about the firm and the plan to get zeolite DAC to 1Mtpa. Hosted by @geoengineering1. Part of Dirty Cash series on cl...
Liming the Amazon - Mu & Palter
01 Apr 2023
Contributed by Lukas
Linquan Mu and Jamie Palter explain the limitations of adding quicklime to rivers. Preprint paper: Considerations for hypothetical carbon dioxide remo...
SRM treaties - Lehmann
20 Mar 2023
Contributed by Lukas
Why sign SRM treaties? What makes them stable and useful? Do they need to be stated, or are norms enough? Niklas Lehmann tries to convince a skeptical...
Adding CDR to GCAM IAM - Morrow
18 Mar 2023
Contributed by Lukas
David Morrow returns! He discusses his unconventional transition from philosophy to integrated assessment modelling. @geoengineering1 gets schooled on...
Foresting the deserts - Caldera
09 Mar 2023
Contributed by Lukas
Is it practical and sensible to turn deserts into forests, using desalination & irrigation? Upeksha Caldera discusses her new paper with @geoengineeri...
Does MCB actually work? Mahfouz
02 Mar 2023
Contributed by Lukas
Naser Mahfouz explains some big problems with MCB to @geoengineering1. Can we fill in the knowledge gaps, before it's too late to use MCB? Paper: "The...
Slippery slope meets precautionary principle - Andow
02 Mar 2023
Contributed by Lukas
How can we merge the concepts of slippery slopes and the precautionary principle? James Andow explains how precautionary evaluation of risks can help ...
Un-do commercial enhanced weathering
02 Mar 2023
Contributed by Lukas
Un-do spreads crushed basalt on farms, and sells the carbon removals to Frontier. @geoengineering1 has concerns about scaling.
Zero pressure space sunshades - Hein
24 Feb 2023
Contributed by Lukas
Andreas Hein entertains @geoengineering1 with more barmy space-based geoengineering nonsense. Expect moon dust, rail guns, space junk, cube sats and a...
Iron salt aerosols - Fiekowsky
24 Feb 2023
Contributed by Lukas
Peter Fiekowsky and @geoengineering1 discuss Iron Salt Aerosols. Do they work (in 14 different ways)? How can we know? Is Peter's new voluntary regula...
Counting trees - Liang
18 Feb 2023
Contributed by Lukas
What counts as a tree, and how do you count trees? What do you do when you're surprised by a grizzly bear? How do you get data from despots? Will AI r...
Heavy metal from weathering - Dupla
16 Feb 2023
Contributed by Lukas
Xavier Dupla discusses heavy metal contamination of soil and water, following enhanced weathering soil treatment. How much is too much? And what can w...
CHALLENGING CLIMATE TAKEOVER - BARRIER REEF MCB
09 Feb 2023
Contributed by Lukas
Good morning, Reviewer 2 listeners. This is Pete Irvine from Challenging Climate. I've been a little disappointed by the Reviewer 2 crew starting a tu...
Local cooling, SAI, & CDR - Baiman
04 Feb 2023
Contributed by Lukas
Reviewer 2 reluctantly agrees to dish out another drubbing to "radical" economist Ron Baiman. @geoengineering1 discusses Ron's new paper on balancing ...
Breaking! DAC & public opinion - Nawaz, Todd & Satterfield
02 Feb 2023
Contributed by Lukas
Hot off the press, Sara Nawaz, Terre Satterfield and Devin Todd discuss their brand new paper on DAC acceptance with @geoengineering1. This episode wa...
Room-temperature microwave DAC - Shi & Gray
01 Feb 2023
Contributed by Lukas
Can microwave regeneration eliminate the need for wasteful heating, in the DAC desorb step? @geoengineering1 interviews Fan Shi, McMahan Gray, and Dav...
Economic value of temporary CDR - Franks & Venmans
31 Jan 2023
Contributed by Lukas
Max Franks and Frank Venmans are interviewed by Robert Höglund on how to price temporary carbon storage. Matthias Kalkuhl, Max Franks, Friedemann Gru...