美国科学60秒 SSS 2013-07-16

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　　It's boating season, which means it'll soon be time for the annoying ritual, scraping of the barnacles.They lache on tide and don't let go, barnacles can be a major pain, as they grow they built calcium¹ deposits under a bolts paint.Their interference with smooth fluid flow can decrease fuel effiency up to 40%, a major problem for larger vessels². Currently, whole paint can be dote with poison, usually based on carbon oxide³ that let it kill the little critters but the poison also escapes into the water and can kill other marine⁴ life. Now researchers might have a better option a paint addititive that kills just the barnacles using their own behavior against them. A toxic⁵ based on molecule-created bacteria. The researchers developed a method of embedding⁶ that toxic into the paint so that it only gets released when the barnacles penetrates⁷ the paint. The finding is published in an university thesis. The scientists determined⁸ that toxic was low concentrations, and could be effective for years, which could lower the cost of paying the barnacle bill.

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