In November of this year, scientists from around the world met in Paris. What they did was something that you wouldn’t even expect to be possible: they redefined the kilogram. That’s right. The way a kilogram used to be measured was based on a hunk of metal under lock and key in France. And it’s been that way since 1889. But now it’s been changed, and in 2019, it will officially be defined by else — something stranger.
You may be thinking: “But why?” Well, the scientists in France gave two reasons: accuracy and ideology. This is a 6+ minute video which explains it all in a straightforward and visually beautiful way. Enjoy!