🚨Global talk on #SolarGeoengineering is heating up but Latin America’s barely in the room.
A new study analyzes the #MakeSunsets case in Mexico & shows why Latin America & the Caribbean need urgent, inclusive SRM governance to prevent risks & protect real research.🧵1/8
2/ With climate risks growing, solar radiation modification is gaining attention globally.
Yet in the Latin America & the Carribean (LAC) region, it's still a marginal topic, largely absent from political agendas, public debate, and regulatory systems.
3/ In 2023, a US-based startup called Make Sunsets released SO2 over Baja California without local approval, triggering outrage & prompting Mexico to ban SRM experiments.
The incident highlighted gaps in governance and ethical oversight.
4/ The authors describe Make Sunsets as a “theatrical,” non-research actor issuing "cooling credits" with no scientific verification.
Its actions were ethically unjustified and lacked transparency, community consent, and accountability.
5/ The study analyzed 89 media articles on SRM in LAC region, focusing on Make Sunset case.
Top public concerns included:
– unintended planetary effects (28.9%)
– lack of governance (15.6%)
– weak scientific basis (13.9%)
– climate risk tradeoffs & geopolitical tensions
6/ The authors argue that inaction (i.e. not developing policy) lets irresponsible actors set the agenda, fueling mistrust, perceived neo-colonialism, and undermining legitimate research.
Hence, "no governance" shapes outcomes too.
7/ The paper calls for anticipatory, participatory governance structures that involve LAC actors in shaping global SRM policy rooted in ethics, transparency, and inclusion.
Ignoring these voices risks deepening inequality and conflict.
📝Read the full open-access paper:
"No Governance Is Governance: Mapping Solar Geoengineering Discussions in Latin America & the Caribbean" here:
🚨Georgia Tech researchers have developed a low-cost method to pull CO₂ from the air (#DAC) using cold temperatures and common materials, potentially slashing capture costs to ~$70 per ton and expanding where Direct Air Capture can work. #CDR
DETAILS🧵1/9
2/ DAC is a critical tool for fighting climate change, but it’s been too expensive to scale.
Current systems often exceed $200 per ton of CO₂ captured, partly due to the high energy needed to run them.
3/ The Georgia Tech team found a smart way to tap into existing industrial cold from liquefied natural gas (LNG) terminals.
When LNG is regasified for use, huge amounts of cold energy are wasted (energy that can chill air for better CO₂ capture).
New study revealed that Kenyan fig trees can literally turn parts of themselves to stone, using microbes to convert internal crystals into limestone-like deposits that lock away CO2, sweeten surrounding soil & still yield fruit. #CarbonRemoval
DETAILS🧵1/8
2/ Some Kenyan fig trees, like Ficus wakefieldii, store CO₂ not just as organic matter (wood/leaves) but also as calcium carbonate (CaCO₃) - the same mineral as chalk or limestone.
This process is called the oxalate-carbonate pathway (OCP).
3/ PROCESS:
First, the tree forms calcium oxalate crystals inside its wood.
Then, special microbes (oxalotrophic microorganisms) or fungi convert these crystals into CaCO₃.
This locks up carbon in mineral form that can persist in soil far longer than organic carbon.