Geoengineering

Geoengineering offers a potential solution for climate change, but it comes with far-reaching social, political, and environmental risks. Below, you will find all our articles, publications, and thematic focuses on geoengineering.

See the topic page Geoengineering

Cover Factsheet cirrus cloud thinning

Cirrus Cloud Thinning

Published: 21 April 2026
Factsheet
By thinning cirrus clouds (wispy, elongated high-altitude clouds), some researchers have proposed that more heat could be allowed to escape into space, thereby cooling the climate.
Cover: Who Funds and Who Pays: The funding of solar geoengineering, 2020–2025

Who Funds and Who Pays

Published: 9 March 2026
Study
Private tech money is rapidly accelerating solar geoengineering research. Funding has increased more than tenfold since 2020, largely from the US and UK. Who shapes decisions on these high-risk technologies – investors or democratic debate?
Cover factsheet marine cloud brightening

Marine Cloud Brightening

Published: 20 April 2026
Factsheet
Marine Cloud Brightening (or Cloud Reflectivity Enhancement) aims to increase the whiteness of clouds in order to reflect more sunlight back into space.     
cover factsheet enhanced weathering

Enhanced Weathering

Published: 21 April 2026
Factsheet
Enhanced weathering techniques involve spreading large amounts of crushed rocks (particularly silicate minerals) onto farmland or beaches, or dumping them into the sea, in order to react with and fix atmospheric carbon dioxide into the oceans and soils.
Cover Factshet BECCS

BECCS: Bioenergy with Carbon Capture & Storage

Published: 21 April 2026
Factsheet
Bioenergy with Carbon Capture and Storage (BECCS) involves capturing carbon dioxide from bioenergy applications and then storing it deep in geological formations or using it to manufacture products. 

What is wrong with Solar Radiation Management?

Published: 9 July 2018
A briefing explaining why Solar Radiation Management (SRM) experiments are a bad idea. SRM describes a set of geoengineering techniques that aim to counter human-made climate change by artificially increasing the reflection of heat from sunlight (solar radiation) back into space. 

The Big Bad Fix: The case against geoengineering

Published: 6 December 2017
Report
The “Big Bad Fix” provides a comprehensive overview of the key actors, technologies and fora relevant in the geoengineering discourse. It opposes geoengineering as a technofix for climate change and as a threat to world peace, democracy and human rights.

The risks of large-scale biosequestration in the context of Carbon Dioxide Removal

Published: 11 October 2017
The Paris Agreement’s target of limiting global temperature rise to 1.5 degrees is largely dependent on Carbon Dioxide Removal (CDR) approaches and climate finance institutions are already supporting such afforestation schemes. The report describes existing trends in the field of large-scale biosequestration and examines the social and ecological impacts of such projects.

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