The first trees emerged about 400 million years ago. Humanity needs only about 18,000 years more to destroy them completely. This estimate is overly simplistic and assumes a “no change” scenario from current trends in deforestation—an annual average loss of -0.13 percent—but it forces us to examine the data from a what if perspective, keeping in mind that forests are one of the most important natural filters and producers of oxygen.
The 1992 Rio Earth Summit was viewed as the turning point for global environmental policy, seeking to overturn disruptive ecological and environmental trends compounded by the industrial revolution and to spur development of national-level environmental policies to address emerging issues. The persistence of deforestation for land clearing and the continued popularity of wood in building and manufacturing despite the critical volume of forest coverage required is (disturbingly) evident in the data.
The Agriculture page compares agircultural land use, nitrogen balance, and sustainable agriculture practices such as organic land use and pesticide usages. The U.S.' organic versus trannsgenic farming land use is disconcerting.