Film 50,000 times thinner than hair may protect coral reefs
A biodegradable film 50,000 times thinner than a human hair could be enlisted to protect the Great Barrier Reef, researchers said. The World Heritage-listed site is suffering from coral bleaching due to warming sea temperatures. Trials on seven different coral types found the shield, made from the same material found in coral skeletons, decreased bleaching by cutting sunlight by 30%.