Could cloud brightening off South America weaken a developing El Niño? Scientists weigh risks and ethics
By
Cody Cottier
1h ago· 6 min readenInsight
Summary
The article examines the controversial proposal of using solar geoengineering — specifically marine cloud brightening off the coast of South America — to weaken or prevent a developing El Niño event. It explores the scientific basis for the idea, the potential risks and unintended consequences, and the major ethical, governance, and technical questions that remain unresolved. The piece balances the urgency of climate intervention with deep skepticism about humanity's ability to safely manipulate complex Earth systems.
Source
bskyCould cloud brightening off South America weaken a developing El Niño? Scientists weigh risks and ethicsscientificamerican.comKey quotes
· 3 pulledThe idea of intentionally intervening in the climate system to stop a natural phenomenon like El Niño raises profound questions about whether we truly understand the consequences of such actions.
Proponents argue that the potential to prevent devastating droughts and heat waves justifies exploring the technology, but critics warn of unforeseen ripple effects across global weather patterns.
We are essentially talking about hacking the planet's thermostat without knowing exactly what other dials we might be turning in the process.
A controversial geoengineering proposal suggests that brightening clouds off South America could weaken a burgeoning El Niño, but major technical and ethical questions remain
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