Remember the visible human science kit?

[eppur_se_muova]

18. Thanks ! Years ago, I saw a paper about how some biological specimens turn translucent when ...

preserved. I wish I could find that paper now, I don't remember any of the details. Probably has something to do with formaldehyde or something similarly toxic, but it would be interesting to know what it is.

There are numerous marine organisms, including fish, that are wholly or partly transparent. And several years ago, mfgrs started introducing transparent food items in several categories. So maybe it's not as hard to achieve as we usually think.

I read on DU about Swedish(?) researchers introducing a transparent wood that might serve as a substitute for glass in buildings. Might be cheaper and safer, but now the "glass" is flammable. :/