Environment
Geoengineering
Adaptation & Geoengineering
Also known as climate engineering, climate intervention
Because some warming is already baked in, the focus is shifting from stopping it to coping with it, through sea walls, heat-tough crops, and even risky ideas to deliberately cool the whole planet, called geoengineering. It leans on Economics, because every defence is a bet about incentives and where scarce money does the most good. It connects to Mathematics' game theory, since one country dimming the sky affects everyone, turning geoengineering into a global strategy standoff. It also reaches Health, because adapting to a hotter world means fighting the heat-driven rise in chronic and metabolic disease.
Key people
- Inés CamilloniArgentinean scientist, climate change expert
- Stephen SalterBritish academic (1938–2024)
Read
- Shaking the Foundations of GeoEngineering EducationBryan McCabe · 2012Book
- Experiment EarthJack Stilgoe · 2015Book
- Whole earth disciplineStewart Brand · 2009Book
- Geoengineering Earth's ClimateJennifer Swanson · 2017Book
Watch
- Geoengineering: A Horrible Idea We Might Have to DoKurzgesagt – In a NutshellVideo
- What is geoengineering anyways?Global Weirding with Katharine HayhoeVideo
- From Climate Shock to Geoengineering | Gernot Wagner | TEDxUniversityofRochesterTEDx TalksVideo
Listen
- Geoengineering Watch Global Alert NewsDane WigingtonPodcast
- GeoEngineeringAnthony ScarlataPodcast
- Reviewer 2 does geoengineeringAndrew LockleyPodcast
- Catalyst with Shayle KannLatitude MediaPodcast
Voices to follow
- Inés Camilloni@InesCamilloni · XArgentinean scientist, climate change expert
By the numbers
- 4.7CO₂ per person (t) — global, 2024 (World Bank)
- 31.1Forest area (% land) — global, 2023 (World Bank)
Debates
- Should geoengineering technologies be deployed now to combat climate change?One view: Yes, the urgency of climate change demands immediate action, and geoengineering offers potential solutions to mitigate its worst effects. · Another: No, the potential risks and unintended consequences of geoengineering are too great, and more research is needed before deployment.Open question
- Which type of geoengineering, Solar Radiation Management (SRM) or Carbon Dioxide Removal (CDR), is the more responsible approach?One view: CDR is more responsible because it addresses the root cause of climate change by removing CO2 from the atmosphere, offering a more permanent solution. · Another: SRM is more practical for rapid temperature reduction, providing a crucial short-term measure to avoid catastrophic warming while CDR methods mature.Open question
- Who should govern the research, development, and potential deployment of geoengineering technologies?One view: International bodies should govern geoengineering to ensure equitable decision-making, global oversight, and prevent unilateral actions that could harm other nations. · Another: National governments should retain primary control over geoengineering decisions, as they are accountable to their citizens and can best manage domestic interests and resources.Open question
Glossary
- GeoengineeringLarge-scale deliberate intervention in the Earth's natural systems to counteract climate change.
- Solar Radiation Management (SRM)Techniques designed to reflect sunlight back into space to cool the Earth.
- Carbon Dioxide Removal (CDR)Techniques that remove carbon dioxide directly from the atmosphere and store it.
- Stratospheric Aerosol Injection (SAI)An SRM method involving injecting reflective particles into the stratosphere to mimic volcanic cooling.
- Ocean FertilizationA CDR method that adds nutrients to the ocean surface to boost phytoplankton growth, which absorbs CO2.
- AlbedoThe measure of the reflectivity of a surface, with higher albedo meaning more sunlight reflected.
Careers
Roles this can lead toward
Threads 3
Where this connects to other fields — and why it's worth knowing.
- Incentives & Rational Choice Economics
The better we get at coping with a hotter planet, the less pressure we feel to stop heating it in the first place. That's the same trap as airbags: safer cars can nudge some drivers to take bigger risks. Economists call this backfire moral hazard, and it means our clever fixes can quietly encourage the mess.
- Game Theory & Strategy Mathematics
Normally with climate, everyone waits for someone else to pay the cost, so nobody acts. But spraying particles to dim the sun is shockingly cheap, which flips the game upside down. Now a single country could cool the whole planet alone, like one person grabbing the thermostat for a house of eight billion.
- Metabolic & Chronic Disease Health
Imagine a painkiller that hides your illness instead of curing it, so if you suddenly stop, all the pain crashes back at once. Some plans to cool the planet by spraying particles into the sky work the same way: stop spraying, and the trapped warming rushes back faster than nature ever would. Masking a problem isn't the same as fixing it.