Another apparent failure of our education system. It's frozen carbon dioxide, as my grade school children already know.
You should care. It's never too late to learn.
We used to play with it, dropping a chunk into our soda pop and watch it bubble smoke. Of course the pop tasted like crap but it was still fun.
The internet: a place to tell everyone how ignorant you are. Should never be used to instead cure that ignorance.
Proud of his ignorance.
Sad.
Maybe we could freeze all the CO2 thereby eliminating globul warming