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Brian Resnick, you report on the sciences here at Vox and I hear you have big breaking scientific news for us this Friday.

The news isn't just big Sean, it's massive.

Tell me more, what has happened?

Scientists have met and versed France and have voted to redefine the kilogram and these changes will take effect next year.

The kilogram like the weight?

Alright, so how to explain this?

What do you think a kilogram is?

I grew up in Canada, it's a whole lot of grams.

Yeah, it's a thousand grams.

But do you know what it is?

What's the definition of a kilogram?

I don't know more than a thousand.

Let me think here.

I could tell you how much in weed, I guess.

Really, a kilogram is a real physical object and it's in France.

It's a thing?

It's a literal weight that's kept under three bell jars outside of Paris.

It was created in the late 1800s to be this permanent representation of weight that the whole entire world can use.

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