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Home Ground Revisited

 

Expecting to read aloud from Walking Home Ground soon, I re-familiarize myself with it and notice connections to what I've posted online since it was published. The work came together slowly, first as personal journal entries before expanding into a book manuscript. I read the Wisconsin writing of John Muir, Aldo Leopold, and August Derleth, walked where they'd walked and journaled about it, and reread Thoreau, as all those writers had done. Eventually, the manuscript followed the trajectory of those influences, from Thoreau to me, quoting them abundantly.

 

Those writers celebrated their time in nature. Thoreau expressed alarm at thinking of work while he walked in the woods: "In my walks I would fain return to my senses. What business have I in the woods, if I am thinking of something out of the woods?" Muir exuberantly described arriving at his new home as "This sudden plash into pure wildness—baptism in Nature's warm heart" and recorded seeing passenger pigeons "flowing over from horizon to horizon in an almost continuous stream all day long, like a mighty river in the sky." Leopold wondered, while "watching the green fire die in a wolf's eyes," about "Thoreau's dictum: In wildness is the preservation of the world." Derleth told how "long walks into the countryside around Sac Prairie disclosed it as nothing else could have done," listing sightings of whippoorwills, woodcocks, "blue racers in the ecstasy of mating," and more. Readers experience natural surroundings deeply in these works.

 

I completed and published Walking Home Ground roughly six years ago. Since then, I've read more recent, truly terrific nature books, like Robin Wall Kimmerer's Braiding Sweetgrass, Suzanne Simard's Finding the Mother Tree, Elizabeth Kolbert's The Sixth Extinction, Barbara Hurd's The Epilogues, Leila Philip's Beaverland, and Ed Yong's An Immense World, all solidly literary and ecologically learned. They tell me things that enrich my understanding of the way the elements of the world we live in work. I gain a deeper understanding of unique qualities of whatever life form or locale they focused on, all far more complicated in their existence than we once knew. They also reveal troubling knowledge about their futures on our planet—as well the future of our species. The nature books of the 21st Century provide urgent warnings and dire speculations about the direction the creatures and creations on the planet are heading.

 

Reviewing my observations about writers walking their home grounds, I feel unsettled by not having stressed implications for the future in what they examined. In The Story of My Boyhood and Youth, Muir was disturbed by the changes wrought in the landscape, prairie and savanna turned into farmland, the health of the environment endangered. Unable to convince new owners to preserve Fountain Lake, his awareness of what could be lost in the natural world sent him exploring and recording as much as he could.

 

Muir saw things as they were and tried to preserve them; Leopold saw things as they had become and tried to restore them. In A Sand County Almanac, he wrote of his own efforts at the Shack: "On this sand farm in Wisconsin, first worn out and then abandoned by our bigger and better society, we try to rebuild, by shovel and ax, what we are losing elsewhere." Time and change are a constant awareness in Leopold's writing; the elegiac is always an undercurrent in what he writes, as well as a sharp observant presence. The monument to the extinct passenger pigeon "commemorates the funeral of a species," he reflected, "Men still live who, in their youth, remember pigeons. Trees still live who, in their youth, were shaken by a living wind. But a decade hence only the oldest oaks will remember, and at long last only the hills will know. To love what was is a new thing under the sun, unknown to most people and to all pigeons."

 

In Return to Walden West, Derleth recognized the changes occurring in his familiar landscape, and sought solace there. "I never found that nature failed me," he wrote. "While the condition of man on his planet slowly worsens, the pattern of the seasons changes not at all, however much nature's aspects reflect the damage wrought by man in his avarice and his devotion to false, unnatural values." He laments the "unceasing change" of the social world, the way most people

"never see themselves as integral to nature." He ends his Sac Prairie nonfiction series with a mixture of resignation and acceptance, letting him come to terms with his experience walking his home ground.

 

Retreat and withdrawal seem acceptable, even justified in those earlier nature writers; broader knowledge and deeper understanding are vitally convincing and necessary in the current ones. They are also disturbing if we're actually learning vital truths too late.

 

 

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Umwelten and Beyond

 

Catching up on unread articles in The New York Times Book Review's year-end issue, I opened to the section on what they judge to be the ten best books of 2022 and realized that I'd been reading one nonfiction choice nightly, An Immense World: How Animal Senses Reveal the Hidden Realms Around Us by Ed Yong, for a week or so. They provided a cover image, a capsule review rich with merited praise, and a short excerpt, part of a paragraph about the speed and power of a striking rattlesnake that I'd already read and remembered well. Upstairs at my nightstand, I leafed through the book, pausing at each dogeared page where scenes or observations had caught my attention on various nights. Rich in vivid description and significant information about the animals it discusses, the book continually expands the reader's awareness of how all kinds of creatures operate in the world.

 

Yong draws on an amazing range of research—most pages throughout the book include footnotes adding to the informative paragraphs above and his extensive bibliography runs 45 pages—sharing not only abundant scientific reading but also onsite conversations with various researchers to learn what distinguishes the sensory ranges of all kinds of creatures. Chapters center on smells and tastes, light and ways of seeing, color, pain, heat, sound, and contact, as well as sensory powers humans might not know they themselves have or once had, powers other very different creatures consistently rely on.

 

Yong begins the book demonstrating how seven creatures in the same physical space might "experience it in wildly and wondrously different ways." As the book will show us, "every animal can only tap into a small fraction of reality's fullness," because each creature is "enclosed within its own unique sensory bubble, perceiving but a tiny sliver of an immense world." He introduces the key term Umwelt: "the part of those surroundings that an animal can sense and experience—its perceptual world," and uses the term Umwelten throughout the book to distinguish different ways that different creatures discern their world. For example, the chapter on electric fields examines such creatures as knifefishes and elephantfishes that "use their electric fields to sense their surroundings, and . . . communicate with each other. Electricity is to them what echoes are to bats, smells are to dogs, and light is to humans—the core of their Umwelt." Yong makes a good case for his assertion that "[t]o stand a chance of knowing what it is like to be another animal, we need to know almost everything about that animal': its senses, nervous system, needs, environment, "evolutionary past and its ecological present."

 

Examples abound throughout the book, encompassing an almost encyclopedic range of creatures. For example, observing heat-sensitive pits behind a rattlesnake's nostrils, Yong tells us they evolved among three groups of snakes, "two non-venomous constrictors, pythons and boas," and "the highly venomous and aptly named pit vipers—cottonmouths, copperheads, moccasins, and rattlesnakes." He points out that "a pit viper can detect the warmth of a rodent from up to a meter away. A blindfolded rattlesnake that's sitting on your head could sense the warmth of a mouse on the tip of your outstretched finger."

 

Such facts surface about other creatures throughout the book. For example: "Around 350 species of fish can produce their own electricity, and humans have known about their ability since long before anyone knew what electricity was." And: "After a busy night of insect-catching, big brown bats use a compass sense to return to their home roosts. After an early life in the open ocean, baby cardinal fish use a compass sense to swim back to the coral reefs where they were born. Mole-rats use their compass to find their way through their dark underground tunnels."

 

As exhilarating as his revelations about all kinds of creatures are, there's a darker aspect to what we learn. In his final chapter Yong details the ways humans have profoundly altered the Umwelten of Earth's other creatures. "We are closer than ever to understanding what it is like to be another animal, but we have made it harder than ever for other animals to be."

 

He heightens our awareness of where our world is now: "We normalize the abnormal, and accept the unacceptable. Remember that more than 80 percent of people live under light-polluted skies, and that two-thirds of Europeans are immersed in noise equivalent to constant rainfall. Many people have no idea what true darkness or quiet feels like . . . . As the problem of sensory pollution grows, our willingness to address it subsides." He asks, "How do we solve a problem that we don't realize exists." This book makes us more profoundly aware and gives us hope that we'll find a way to address it.

 

 

Notes: Yong, Ed. An Immense World: How Animal Senses Reveal the Hidden Realms Around Us. New York: Random House, 2022.

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