The University of Illinois Extension offers all sorts of interesting facts to know and places to go on their education web site "Christmas Trees and More."
The page was created for use by teachers in the classroom, but children and their families at home will find much to learn and do as well. Web site links include a virtual Christmas tree farm, holiday history and traditions, and the "Nation's Christmas Tree" in General Grant National Park.
Even if you don't have children to educate and entertain you will enjoy browsing the information available. It will provide you with some great cocktail party conversation at your next holiday event!