Even though the National Park Service is charged with keeping places like Sequoia “unimpaired” for future generations, it doesn’t usually step in when trees meet their end because of thirst and pestilence. Droughts and insects are supposed to be normal, natural occurrences. But it’s hard to say whether the changes witnessed here — or at neighboring Kings Canyon National Park, or at national parks across the nation — still count as normal, or even “natural,” at least as park stewardsn have long understood the term. And those changes raise a lot of prickly questions that cut to the very heart of what keepers of public lands do, and how they perceive their mission.
After all, even as tens of millions of tourists throng through their gates every year to get a glimpse of the “wild,” official policy has, for decades, directed scientists and managers to keep the parks they oversee as untainted as possible, looking as nature would if humans had never intervened. But how do you preserve the wilderness when nature itself is no longer behaving like it’s supposed to? How do you erase human influence when that influence is now everywhere, driving up temperatures, acidifying oceans, melting glaciers, and rapidly remaking the landscapes we’ve come to know as our national parks?
In Alaska, boreal forest trees are rooting into the previously treeless tundra. The javelina, a hoofed, pig-like mammal, has wandered north from part of its traditional range in southern Arizona into Grand Canyon National Park. The glaciers of Glacier National Park are withering in the heat and will probably be gone in less than 15 years.
Under the Obama administration, the park service took on climate change as a kind of combat mission. A quote from then-National Park Service director Jonathan Jarvis is still emblazoned across a number of agency websites: “I believe climate change is fundamentally the greatest threat to the integrity of our national parks that we have ever experienced.”
Those realizations were already upending the park service and its affiliated agencies when the nation elected its new president, Donald Trump, who has famously called climate change a “hoax.”
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