Adam Spencer, the Maths & Science Ambassador of Sydney University, is excited about scientists voting on the first change to the kilogram in a century.

Next week, he explains to Michael McLaren, leading figures in the field of metrology are set to make history.

At the general conference on weights and measures in Versailles, representatives from 57 nations will vote for change for the ‘kilogram’, the only metric unit still based on a solitary object.

From then, the kilogram will be derived from a fundamental constant, a number that is woven into the fabric of the universe.

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