From the Stone Tools project page...

>> If you have ever seen the fracture which results when a BB hits a glass window, you have seen the conchoidal fracture.

Wow the instructor sounds extra, but this would’ve been a great course to go through in a summer as a kid. It’d be fun to audit as an adult really.

How is it that the new website is uglier than the old one?

I think chemistry is one of those subjects that should be the easiest to teach in a captivating way and yet most school/university level treatments tend to be quite dry. I imagine most of this is due to cost, safety and effort required but one can dream.