Could man-made clouds save the Great Barrier Reef?

The future of the Great Barrier Reef is in doubt, as it struggles to recover from a second severe bleaching event as a result of warmer ocean temperatures thought to be linked to climate change.

But a group of marine scientists in Australia are hopeful the reef could yet be saved - by artificially engineering brighter clouds to reflect back the sun's rays and keep the waters cool.

Over the past six months, researchers at the Sydney Institute of Marine Science and the Ocean Technology Group at the University of Sydney have been investigating the use of marine cloud brightening technology (MCB) on low-lying clouds over the Great Barrier Reef.

The idea is that spraying salt into the atmosphere will encourage greater droplet formation, resulting in larger, denser clouds.

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