Humans have been falling, utilizing, and burning trees for approximately half a million years, and the woods have receded as human populations have risen and spread. The clearance of woodlands for agriculture has been the principal cause of deforestation, but the collecting of lumber as a raw material and fuel has also played a large role. The word deforestation (Deforestation, n.d.-b) is a wide-ranging term that involves the cutting, use, and destruction of trees. Subsumed under it are additional operations like fire, household heating and cooking, smelting metals, producing pottery, construction of shelter and equipment, and the formation of fresh ground for cultivation and grazing. Deforestation is so basic that it is woven into the very fabric of human existence, and therefore of world history. Ever since the advent of Homo erectus roughly 500,000 years ago the necessity to provide shelter, food, and warmth has resulted in the use and abuse of the Earth’s mantle of forests. Now when you cut a forest, an ancient forest in particular, you are not just removing a lot of big trees and a few birds fluttering around in the canopy. You are drastically imperiling a vast array of species within a few square miles of you. The number of these species may go to tens of thousands. Many of them are still unknown to science, and science has not yet discovered the key role undoubtedly played in the maintenance of that ecosystem, as in the case of fungi, microorganisms, and many of the insects. (E. O. Wilson Quote, n.d.-b)