Which books provide a good overview of modern human prehistory?
I find the subject of the emergence of language, culture, and society to be quite fascinating. I want to build a more comprehensive model of global prehistory from approximately 200,000 - 3,000 BCE than just "hunter-gatherer societies and spoken language". I understand that the understanding of these eras is frequently...
The main thing you want to prevent is large scale ice crystal formation. Dry ice sits just below the temperature needed for water to crystalize when freezing, so it delays the crystal formation by a substantial amount. However, for extended periods the ice can still crystalize so that's why it's important to get to cryogenic temperatures.