In 2015 the number of visitors to Yellowstone exceeded four million for the first time. David Quammen, writing in the May 2016 edition of National Geographic magazine, asks "Can we hope to preserve, in the midst of modern America, any such remnant of our continent's primordial landscape, any such sample of true wildness-a gloriously inhospitable place, full of predators and prey, in which nature is still allowed to be red in tooth and claw? Can that sort of place be reconciled with human demands and human convenience? Time alone, and our choices, will tell. But if the answer is yes, the answer is Yellowstone."