Japanese Scientists Create Glass That's Pretty Much Unbreakable

Image actually not from the story cited but rather from here

Previous attempts to add alumina to glass have failed, because the raw mixture crystalised as soon as it touched any kind of container. By removing the container and mixing the glass in the air instead, this problem was overcome.

I've posted before about this, but the initial article was a bit more academic and written for a journal.

This one is written for a more populist audience, so it's certainly going to be more useful for my students.