Being TreeHugger's first Christmas, we dipped our toe into the real or fake tree debate for the first time, with ::How To: Pick a Green Christmas Tree. It is the subject that keeps on giving; read subsequent posts on how ::Christmas Trees Add to Global Warming because in the Southern United States, hardwoods and indigenous pine trees are being cut down to make Christmas tree farms. Others have suggested that the greenest trees are Living Christmas Trees. The debate rages on in our forums. More from ::Three Years ago in TreeHugger.