<ul><li>Researchers have discovered the secret behind how polar-bear fur remains free of ice in sub-zero temperatures.</li><li>The fur's ice-shedding properties can be attributed to a substance called sebum, which is produced by glands near the root of each hair.</li><li>Chemicals found in sebum could be used to develop environmentally-friendly anti-icing surfaces and lubricants, potentially replacing harmful substances currently in use.</li><li>The research could also provide insights into the anti-icing properties of other Arctic mammals.</li></ul>

Scientists discover secret of ice-free polar-bear fur

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