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What defines a kilogram? It's about to change

Monday, November 12, 2018 - 01:05

Experts are set to redefine the kilogram - ditching a relic made of a platinum-iridium alloy for something more up to date.

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Experts are set to redefine the kilogram - ditching a relic made of a platinum-iridium alloy for something more up to date.

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What defines a kilogram? It's about to change

Monday, November 12, 2018 - 01:05