By Dr. Nat (Drnat) on Friday, September 7, 2012 - 09:21 pm:
My soil professor would become irate if anyone dared call soil "dirt." He insisted that dirt is nasty stuff, but soil is the stuff of life. (Yes, I had a semester long graduate class about soil and spent a year working in a soil lab). Technically, soil is an unconsolidated mix of mineral material and organic matter that can support plant life. Sand, on the other hand is a mineral particle 1/16 to 2mm in diametre that results from weathering of older rocks. Soil can contain sand, but sand itself is not soil.
I know, I know. Those darn scientists and our technicalities. But to be honest, I call soil "dirt," even though I know better.
By Diana P. (Diana) on Saturday, September 8, 2012 - 11:38 am:
As a parent chaparone on a school field trip, I heard a high school agri-science teacher emphasize a similar difference between soil and dirt; soil being "the good stuff ... for growing things" and dirt being "the bad stuff ... including soil where you don't want it". I learned something that day, and have always remembered it! :-)
Marsha, thanks for sharing the information on the CraneFest in Bellevue. :-)