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US nickels cost seven cents to make. Scientists may have a solution
JAY GORY, MANAGING EDITOR, science
The US Mint needs an upgrade. Specifically, it’s got to find a way to make cheaper nickels. The manufacturing cost of a single five-cent coin has exceeded its value since 2006, when the price of the materials that make it up—copper and nickel—went up thanks to rising demand in the US for other products relying… read more


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