Choose Your Tree: Deciding between a real or artifical Holiday Tree

Have you debated with others (or possibly yourself) about which tree is more environmentally friendly, a real tree or a fake tree? While no 100 percent clear answer can be made, there are some important factors to consider before purchasing your tree.  Check out this site for further information:
http://earth911.com/news/2010/11/29/real-vs-artificial-christmas-trees/