Solar geoengineering is a justice question. As sunlight reflection methods move from theory toward real-world research, who gets to decide what happens next? This episode explores the justice and governance questions surrounding solar geoengineering, also called solar radiation modification or SRM. Hassaan Sipra of the Alliance for Just Deliberation on Solar Geoengineering explains why the risks of climate intervention cannot be separated from existing inequalities in climate change, especially for climate-vulnerable communities in the Global South. The conversation covers environmental justice, public participation, free, prior and informed consent, governance gaps, research transparency, and why climate intervention must never replace emissions cuts, adaptation, climate finance, or loss and damage. A grounded, accessible finale to Oceanography’s marine climate intervention arc.

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Episode Guests: Hassan Sipra

Learn more about justice and SRM on the SDG website.

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Cover art by Jomiro Eming

Theme music by Nela Ruiz

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Shipping pollution changed clouds. What can scientists learn? What happens when cleaner shipping fuel suddenly changes the atmosphere above the ocean? In this episode of Oceanography, meteorologist Dr. Michael Diamond explains how shipping pollution, cloud formation, and climate are connected, and how a major fuel regulation and disrupted global shipping routes created a rare natural experiment for scientists. The conversation explores aerosols, sulfur pollution, cloud brightening, and what these real-world changes can teach us about marine climate intervention, including marine cloud brightening and solar geoengineering. If you want to understand how human activity is already shaping clouds, warming, and climate policy, this episode offers a grounded, fascinating look at one of the most complex questions in climate science.

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Episode Guests: Dr. Michael Diamond

Find Dr. Diamond’s published article on the impacts of the IOM regulation and preprint on the impacts of a changed shipping route.

Review Dr. Diamond’s publications on Google Scholar

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Episode Transcript and more information on the Pine Forest Media website

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Hosted, produced, and edited by Clark Marchese

Cover art by Jomiro Eming

Theme music by Nela Ruiz

Find some more Pine Forest Media podcasts below

Listen to Plastic Podcast on Spotify or Apple Podcasts

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Could reflecting sunlight help cool the Earth? Stratospheric aerosol injection, or SAI, is a proposed climate intervention that aims to reduce global temperatures by reflecting a small portion of incoming sunlight. Inspired by volcanic eruptions, this approach is being studied through climate and ecosystem models to better understand its potential effects. This episode explores how SAI could influence sea surface temperature, net primary production, ocean chemistry, and marine food webs. It also looks at how scientists use models to evaluate different deployment scenarios, including long-term use and phase-out strategies. Along the way, the conversation considers uncertainty, regional variability, and the role SAI might play within a broader portfolio of climate responses.

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Episode Guests: Dr. Kelsey Roberts

Find Dr Robert’s publication on the Potential Impacts of Climate Intervention on Marine Ecosystems

Review Dr. Robert’s publications on Google Scholar

Find more resources on geoengineering at GeoMIP

Learn more about Justice and Governance about SRM Technologies at DSG

Listen to COP30: Green Power for more on global climate policy

Episode Transcript and more information on the Pine Forest Media website

Follow Pine Forest Media on Instagram @pineforestmedia

Hosted, produced, and edited by Clark Marchese

Cover art by Jomiro Eming

Theme music by Nela Ruiz

Find some more Pine Forest Media podcasts below

Listen to Plastic Podcast on Spotify or Apple Podcasts

Listen to South Pole on Spotify or Apple Podcasts

Listen to Something in the Water on Spotify or Apple Podcasts

Hosted on Acast. See acast.com/privacy for more information.