There's one estimate which suggests that in the United States, two thirds of the land which was once forested and then cleared has become reforested as loggers and farmers have retreated, particularly from the eastern half of the country.
Der er et estimat som som siger at i USA var to tredjedele af landet en gang dækket af skov  og derefter fældet, nu er genopstået som skov,  efter tømmerfældning og landbrug har fortrukket. Specielt fra de østlige dele af landet.