National Forest Service(NEW YORK) -- The centerpiece for home holiday decorating could cost next to nothing if you live near a national forest and are willing to do some heavy lifting. The U.S. Forest Service is encouraging Americans to cut down their Christmas trees at a nearby federally protected forest, and in a majority of participating locations, all it will cost is a mere $5 or $10 for a permit. Cutting down Christmas trees actually improves forest health, according to the U.S. Department of Agriculture. The permit system, offered at dozens of national forests throughout the country, hel...