The elaborate mechanical toys in 7th century Korea is described by a Korean monk some five hundred years later. This essay reveals to the reader a little about the technology and trade of that time.

As a new middle-school teacher, I’m facing a challenge I never thought about before: assigning a list of school supplies for my students. My colleagues tell me that there’s a real downside to wooden ...

The purpose of this paper is to determine the extent to which the physical and mechanical properties of dry and green wood samples are correlated. Samples of green (fresh) sap- and heartwood differing ...