American forests are growing 42 percent faster than they are being cut and 380 percent faster than they were growing back in 1920. At least, that was true in 2000 when this report evaluating the state of forests in the United States was published by the U.N. Food and Agriculture Organization. Though the report is a bit old, its conclusions should be just as valid today.
What the report does not say is that the internal combustion engine is one of the main reasons for the healthy state of American forests. As recently as 1910, farmers used horses and other animals for almost all heavy-duty farm work. To supply these animals with food, farmers typically dedicated a third or more of their farms to pastureland. This pasture provided farmers with no direct revenue, just feed for their draft animals.
