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Could more reflective clouds save the Great Barrier Reef?

Australia’s Great Barrier Reef is suffering hugely from rising temperatures caused by climate change, and a group of Sydney scientists are working on a briny solution that might be the reef’s best hope: spraying salt particles into the sky to make clouds more reflective, MIT Technology Review reports. Warming waters are causing massive coral bleaching—the exodus of algae that normally live in unison with coral, which leads to starved and whitened reefs. With the aid of Silicon Valley technologists, the scientists are considering experiments to extract salt from seawater, use spray nozzles to disperse salt particles into the sky along the country’s northeastern coast, and make brighter clouds that reflect more sunlight and keep coral reefs cooler—all in theory, of course.

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