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Today, Explained

How to kill a gram

Today, Explained

Vox

Politics, Daily News, News

4.310.3K Ratings

🗓️ 20 May 2019

⏱️ 23 minutes

🧾️ Download transcript

Summary

Today, a new definition of the kilogram officially takes effect. But it's just one piece in the massively complicated history of weight. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Transcript

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0:00.0

The news is just big.

0:13.2

It's massive.

0:14.8

Tell me more what's happening.

0:16.3

Back in November, scientists and France voted to redefine the kilogram, which is the world's

0:21.0

standard unit of mass, and that change goes into effect today.

0:24.5

Today?

0:25.5

Today!

0:27.5

How do you redefine the kilogram?

0:31.9

How do you explain this?

0:34.9

What do you think a kilogram is?

0:36.6

I grew up in Canada.

0:38.2

It's a whole lot of grams.

0:39.7

Yeah, it's a thousand grams.

0:41.4

Do you know what it is?

0:44.5

What's the definition of a kilogram?

0:47.9

I don't know more than a thousand.

0:50.9

Let me think here.

0:52.5

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

0:55.8

Well, before today, a kilogram was a real physical object in France.

1:01.4

It's a thing.

1:02.4

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

1:07.7

It was created in the late 1800s to be this permanent representation of weight that the

...

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