Wozniak’s New Goal is Efficient Housing

http://www.ecnmag.com/article.aspx?id=146610

You build a home out of a type of wood that keeps the temperature constant without air conditioning or heaters. The Southern Yellow Pine has a resin inside that melts and freezes at 71 degrees F., a very comfortable temperature for humans. The chemical actions of melting and freezing work to balance the temperature. If it’s a hot day, some small amount of the resin melts (it takes a huge amount of energy to melt a tiny amount) and the melting process pulls heat from the surroundings, from the home. When it gets colder at night, the resin-wood emits heat as it freezes.

props to my girl slapdash for knowing the woz!