How Aussie Scientists Are Helping To Perfect The Kilogram

This is the roundest object in the world, and it was built at an absurd cost by boffins at the CSIRO. Weirdly, it was built to save the kilogram.

This awesome video shows you how the kilogram came to be as a measurement, why it was in jeopardy and how Aussie scientists created an amazing sphere to solve the weightiest problem on Earth.

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