https://middlebury.figshare.com/articles/thesis/Geoengineering_Planet_Politics_and_the_Price_We_Pay/29577932

*Authors*: Rosella Graham

*11 September 2025*

*Abstract*
As global greenhouse gas emissions continue to rise, climate change is
accelerating with devastating consequences—from more intense heatwaves and
droughts to rising sea levels and extreme weather events. While mitigation
and adaptation efforts remain central to international climate policy,
these measures alone may no longer be sufficient to prevent the most severe
outcomes. Though widely supported, solutions like fully renewable energy
transitions or net-zero emissions by 2050 have minimal downsides, but
remain unrealistic in the near term. Which brings me to the purpose of this
thesis: to explore the emerging field of geoengineering as an alternative
response to global warming, focusing on two primary approaches: Carbon
Dioxide Removal (CDR) and Solar Radiation Modification (SRM).

Geoengineering offers potential solutions to mitigate these effects without
relying solely on energy consumption or behavioral changes but presents
some potential drawbacks. CDR, particularly through technologies like
Direct Air Capture and Storage (DACCS), aims to remove carbon dioxide (CO2)
from the atmosphere but faces high costs and scalability challenges. SRM,
such as Stratospheric Aerosol Injection (SAI) and Marine Cloud Brightening
(MCB), seeks to cool the planet by reflecting sunlight or allowing infrared
radiation to escape but presents complex environmental and geopolitical
risks.

This thesis examines how the potential benefits and predicted costs of
geoengineering shape how countries implement the technologies, focusing on
regional differences in the United States (U.S.), India, and the European
Union (EU). I analyze how varying resources, technologies, and
vulnerabilities shape both implementation and the distribution of risks and
benefits.

I conclude that while the EU remains committed to precaution and is
unlikely to deploy SRM without a global governance framework, it may
eventually face internal fragmentation as individual member states pursue
their own climate survival strategies. The U.S.’s technological advantage
and wealth favor CDR development, but its political polarization and
misinformation hinder decisive action, particularly around SRM. India,
although deeply vulnerable and cautious due to its weather-dependent
agricultural economy, may be compelled to support SRM research or
deployment to avoid geopolitical marginalization and protect its population
from escalating climate extremes. Ultimately, geoengineering’s future will
be shaped less by science than by political will, regional inequities, and
the urgency of crisis response—raising the possibility of fragmented,
uneven deployment.

*Source: Middlebury*

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