Damn you, I had to hunt, it was the one self described with the deliberately misleading clickbait title:

the most important material in science

    The most important material in science is glass. This is a video about the history of glass. Glass is important. Glass is complicated. Professional scientific glass blowers are the coolest people in the world. And a little discussion on art versus science. 

https://www.youtube.com/watch?v=1eUI38MpiYo

It's a great video isn't it?

TBH I stepped through it, it seems pretty good with no obvious errors and it's on the aspirational "to watch" list .. I worked with a few glass blowers for both craft and science applications some decades back so I have a few solid books on the history of glass and a few hundred hours batching glass recipes.

My benchmark for a great glass video is (say) any > 30 minute full piece video of Lino T. working:

https://www.youtube.com/watch?v=DgbtaKfab7k

he's the Robert Fripp of cane work, the Eno of free form, ...

EDIT: here's a short nail biter for you: https://www.youtube.com/watch?v=7qt8-5Vx1HA

> EDIT: here's a short nail biter for you: https://www.youtube.com/watch?v=7qt8-5Vx1HA

That was the most stressful video I have seen in a long time.