tree or cut down a real one? which is environmentally friendlier? joining us now, with decorating tips and hopefully the answer to the question, is deputy director of the nature conservancy and you can check out the web site, nature.org. all right, i always thought if you cut done a real tree you are hurting nature and you should get a fake one and use it over and over and over and over. >> well, actually the answer as you say, is surprising. as the nature conservancy we love trees and what they do for us, cleaning the air and our water and keeping our climate as it is. and if you cut down a real tree, and buy a real try, you are helping keep christmas tree farms in business and keeping ten times that many trees growing on the land, doing the same functions for us. >> harris: and you say fake trees are bad? >> there are a number of different challenges, with them. probably the biggest is, over 85% of the fake trees sold in the u.s. are made in china and