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The high-tech coating that makes ketchup glide out
Getting ketchup out of the bottle wasn't always so smooth or easy. But a coating material called LiquiGlide, originally invented to solve a problem in the oil industry, cuts the natural friction and tension between liquids and solids, allowing you to get out every last drop of toothpaste, cream cheese or paint. The NewsHour’s Nsikan Akpan reports.
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