A study involving 200 scientists worldwide “found that [26 million square miles] [68 million square kilometers] of land met ‘ wilderness ’ criteria, meaning that they have at least 70 percent of their original vegetation, contain fewer than [13] people per [square mile] [five people per square kilometer] outside urban areas, and have not been reduced to fragments of less than [3,900 square miles] [10,000 square kilometers]. ”
Tas nozīmē, ka sākotnējā augu valsts tur ir saglabājusies vismaz 70 procentu apjomā, iedzīvotāju blīvums ārpus pilsētām nepārsniedz 5 cilvēkus uz kvadrātkilometru un šīs teritorijas aizņem vairāk nekā 10 tūkstošus kvadrātkilometru lielu platību.