I’m standing atop Rush Hill on Alaska’s remote St. Paul Island. While only 665 feet high, it provides a 360-degree view of this tundra-covered, 13-mile-long, seven-mile-wide part of the Pribilof Islands. While the hood of my rain jacket flaps in the cold wind, I gaze in wonder at the silvery waters of the Bering Sea. The ever-present wind whips the surface into a chaos of whitecaps, scudding mist, and foam.
The ancient cinder cone I’m perched on reminds me that St. Paul, was, oh so long ago, one of the last places woolly mammoths could be found in North America. I’m here doing research for my book The End of Ice. And that, in turn, brings me back to the new reality in these far northern waters: as cold as they still are, human-caused climate disruption is warming them enough to threaten a possible collapse of the food web that sustains this island’s Unangan, its Aleut inhabitants, also known as “the people of the seal.” Given how deeply their culture is tied to a subsistence lifestyle coupled with the new reality that the numbers of fur seals, seabirds, and other marine life they hunt or fish are dwindling, how could this crisis not be affecting them?
While on St. Paul, I spoke with many tribal elders who told me stories about fewer fish and sea birds, harsher storms and warming temperatures, but what struck me most deeply were their accounts of plummeting fur seal populations. Seal mothers, they said, had to swim so much farther to find food for their pups that the babies were starving to death before they could make it back.
And the plight of those dramatically declining fur seals could well become the plight of the Unangan themselves, which in the decades to come, as climate turbulence increases, could very well become the plight of all of us.
Just before flying to St. Paul, I met with Bruce Wright in Anchorage, Alaska. He’s a senior scientist with the Aleutian Pribilof Islands Association, has worked for the National Marine Fisheries Service, and was a section chief for the National Oceanic and Atmospheric Administration for 11 years. “We’re not going to stop this train wreck,” he assures me grimly. “We are not even trying to slow down the production of CO2 [carbon dioxide], and there is already enough CO2 in the atmosphere.”
While describing the warming, ever more acidic waters around Alaska and the harm being caused to the marine food web, he recalled a moment approximately 250 million years ago when the oceans underwent similar changes and the planet experienced mass extinction events “driven by ocean acidity. The Permian mass extinction where 90% of the species were wiped out, that is what we are looking at now.”
I wrap up the interview with a heavy heart, place my laptop in my satchel, put on my jacket, and shake his hand. Knowing I’m about to fly to St. Paul, Wright has one final thing to tell me as he walks me out: “The Pribilofs were the last place mammoths survived because there weren’t any people out there to hunt them. We’ve never experienced this, where we are headed. Maybe the islands will become a refuge for a population of humans.”
The Loss Upon Us
For at least two decades, I’ve found my solace in the mountains. I lived in Alaska from 1996 to 2006 and more than a year of my life has been spent climbing on the glaciers of Denali and other peaks in the Alaska Range. Yet that was a bittersweet time for me as the dramatic impacts of climate change were quickly becoming apparent, including quickly receding glaciers and warmer winter temperatures.
After years of war and then climate-change reporting, I regularly withdrew to the mountains to catch my breath. As I filled my lungs with alpine air, my heart would settle down and I could feel myself root back into the Earth.
Later, my book research would take me back onto Denali’s fast-shrinking glaciers and also to Glacier National Park in Montana. There I met Dr. Dan Fagre, a U.S. Geological Survey research ecologist and director of the Climate Change in Mountain Ecosystems Project. “This is an explosion,” he assured me, “a nuclear explosion of geologic change. This… exceeds the ability for normal adaptation. We’ve shoved it into overdrive and taken our hands off the wheel.” Despite its name, the park he studies is essentially guaranteed not to have any active glaciers by 2030, only 11 years from now.
My research also took me to the University of Miami, Coral Gables, where I met the chair of the Department of Geological Science, Harold Wanless, an expert in sea-level rise.
I asked him what he would say to people who think we still have time to mitigate the impacts of runaway climate change. “We can’t undo this,” he replied. “How are you going to cool down the ocean? We’re already there.”
As if to underscore the point, Wanless told me that, in the past, carbon dioxide had varied from roughly 180 to 280 parts per million (ppm) in the atmosphereas the Earth shifted from glacial to interglacial periods. Linked to this 100-ppm fluctuation was about a 100-foot change in sea level. “Every 100-ppm CO2 increase in the atmosphere gives us 100 feet of sea level rise,” he told me. “This happened when we went in and out of the Ice Age.”
As I knew, since the industrial revolution began, atmospheric CO2 has already increased from 280 to 410 ppm. “That’s 130 ppm in just the last 200 years,” I pointed out to him. “That’s 130 feet of sea level rise that’s already baked into Earth’s climate system.”
He looked at me and nodded grimly. I couldn’t help thinking of that as a nod goodbye to coastal cities from Miami to Shanghai.
In July 2017, I traveled to Camp 41 in the heart of the Brazilian Amazon rainforest, part of a project founded four decades ago by Thomas Lovejoy, known to many as the “godfather of biodiversity.” While visiting him, I also met Vitek Jirinec, an ornithologist from the Czech Republic who had held 11 different wildlife positions from Alaska to Jamaica. In the process, he became all too well acquainted with the signs of biological collapse among the birds he was studying. He’d watched as some Amazon populations like that of the black-tailed leaftosser declined by 95%; he’d observed how mosquitoes in Hawaii were killing off native bird populations; he’d explored how saltwater intrusion into Alaska’s permafrost was changing bird habitats there.
His tone turned somber as we discussed his research and a note of anger slowly crept into his voice. “The problem of animal and plant populations left marooned within various fragments [of their habitat] under circumstances that are untenable for the long term has begun showing up all over the land surface of the planet. The familiar questions recur: How many mountain gorillas inhabit the forested slopes of the Virunga volcanoes, along the shared borders of the Democratic Republic of the Congo, Uganda, and Rwanda? How many tigers live in the Sariska Tiger Reserve of northwestern India? How many are left? How long can they survive?”
As he continued, the anger in his voice became palpable, especially when he began discussing how “island biogeography” had come to the mainland and what was happening to animal populations marooned by human development on fragments of land in places like the Amazon. “How many grizzly bears occupy the North Cascades ecosystem, a discrete patch of mountain forest along the northern border of the state of Washington? Not enough. How many European brown bears are there in Italy’s Abruzzo National Park? Not enough. How many Florida panthers in Big Cypress Swamp? Not enough. How many Asiatic lions in the Forest of Gir? Not enough… The world is broken in pieces now.”