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New Study Links Sulphur Removal to Coral Bleaching Surge

1/23/2026

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Summary

Story summary

A new study finds that removing sulphur from shipping fuels has intensified coral bleaching on Australia’s Great Barrier Reef.
Dr. Robert Ryan from the University of Melbourne found reduced sulphur emissions allowed more sunlight to reach the reef, increasing heat stress in 2022.
The study estimates 5% to 10% more sunlight reached the reef because of these regulations.
Experts say cut air pollutants and greenhouse gases to protect these ecosystems.

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Story summary

A new study finds that removing sulphur from shipping fuels has intensified coral bleaching on Australia’s Great Barrier Reef.
Dr. Robert Ryan from the University of Melbourne found reduced sulphur emissions allowed more sunlight to reach the reef, increasing heat stress in 2022.
The study estimates 5% to 10% more sunlight reached the reef because of these regulations.
Experts say cut air pollutants and greenhouse gases to protect these ecosystems.