In Trees

An Exploration

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About the Book

“This is the most life-affirming book I’ve read in a long time.” —John Vaillant, National Book Award finalist for Fire Weather

Named a Best Book of the Year So Far by: The New Yorker NPR The Financial Times

From the acclaimed author of the New York Times bestseller On Trails comes a wondrous new journey through the wilds of nature and the gnarls of history, exploring how trees—from the mightiest sequoia to the tiniest bonsai—can teach us to grow wise.

One day, on a whim, Robert Moor set out to climb a tree near his home—unwittingly embarking on what would become a decade-long adventure of intellectual and spiritual transformation.

Pursuing the hidden wisdom of trees, he digs through forgotten archives, scales to the top of a giant sequoia with Sir David Attenborough, trudges through swamps in Papua to reach a treehouse-dwelling tribe of hunter-gatherers, and travels to a remote research camp in Tanzania, where he spends one very uncomfortable night sleeping in a chimpanzee nest. Galvanized by a radical new outlook on both our gnarled past and our ever-branching future, he ultimately falls in with a ragtag clan of climate activists risking everything to halt construction of an oil pipeline and save an old-growth forest.

Along the way, Moor learns the art of “treethinking,” which, he discovers, has the power to break open some of humanity’s oldest questions: What is the secret to truly growing old? How do we set down roots in an increasingly chaotic world? Can we ever learn to pursue our future in the farsighted, deeply entangled manner of an ancient forest?

A witty, relentlessly curious excursion through philosophy, history, and science, what begins as an ode to the miracle of trees blossoms into a joyous, daring, and fiercely hopeful effort to “arborize humanity.”

Appearances

SEP 26
9:00AM
In Person

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Jackson Hole Book Festival at Trailborn Jackson Ho
400 E Snow King Ave
Jackson, WY 83001
SEP 26
6:00PM
In Person

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Trailborn Jackson Hole
400 E Snow King Ave
Jackson, WY 83001
SEP 29
6:00PM
In Person

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Wheatgrass Books
120 N Main St
Livingston, MT 59047
SEP 29
6:00PM
In Person

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Wheatgrass Books
120 N. Main St.
Livingston, MT 59047
OCT 1
3:30PM
In Person

FESTIVAL - Kingston Writers Festival, In Conversation with Andrew Westoll. Moderated by Gregory McCormick.

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Kingston Writers Festival
285 King St. East
Kingston, ON K7L 3B1
OCT 4
11:00AM
In Person

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Haystack Book Festival at Norfolk Library
9 Greenwoods Rd E
Norfolk, CT 06058
OCT 14
6:00PM
In Person

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Lake Forest Bookstore
662 N Western Ave
Lake Forest, IL 60045
OCT 19
7:00PM
In Person

Morton Arboretum
4100 Illinois Route 53
Lisle, IL 60532
OCT 23
1:00PM
In Person

FESTIVAL - Vancouver Writers Festival, In Conversation with Jason Dove Mark and John Vaillant. Hosted by Arno Kopecky

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Vancouver Writers Festival
1218 Cartwright Street
Performance Works
Vancouver, BC V6H 3R8
NOV 1
12:30PM
In Person

FESTIVAL - Toronto International Festival of Authors

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Toronto International Festival of Authors
93 Charles Street West
Isabel Bader Theatre
Toronto, ON M5S 1K6
NOV 22
2:00PM
In Person

Houston Botanical Garden
1 Botanic Ln
Houston, TX 77017

About the Author

Photograph by Remi Morawski

Hailed by The Wall Street Journal as a “philosopher on foot,” Robert Moor is the bestselling author of On Trails and now In Trees. Translated into more than a dozen languages, On Trails garnered the National Outdoor Book Award, the Pacific Northwest Book Award, and the William Saroyan International Prize. His writing has appeared in The New YorkerThe AtlanticHarper’sNew York magazine, Outside, Emergence, and n+1, among other publications. He lives in Halfmoon Bay, British Columbia.

Product Details

  • Publisher: Simon & Schuster (April 7, 2026)
  • Length: 384 pages
  • ISBN13: 9781476739281

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Raves and Reviews

“A beautiful book... impossible to put down.... I’ve been recommending it to everyone I know.” 
—David Wallace-Wells, on The New York Times' "The Opinions" podcast

“Gorgeous, honest, and soulful.”
—Bryan Stevenson, New York Times bestselling author of Just Mercy 

 "Earnest and passionate."
—NPR

“Daring, inspired, and wide-ranging, this is much more than a book about trees. To read this book is to feel oneself anchored more firmly to the earth and, simultaneously, to become more open to life’s many branching, wild possibilities.”
—Ferris Jabr, New York Times bestselling author of Becoming Earth

“Robert Moor’s brilliant In Trees is—like its subject—powerfully, fascinatingly arborescent. Moving from sky to earth, Moor unfurls in fine-grained prose the ancient, urgent story of how trees transform us. Reading it, I felt my senses of time, life, and process shift in ways I hadn’t experienced before.”
—Robert Macfarlane, New York Times bestselling author of Is a River Alive?

“A new book in that rare category of ‘classic upon publication.’”
—Bill McKibben, New York Times bestselling author of Here Comes the Sun

In Trees is dazzlingly erudite, playful, profound, adventurous and, above all, eloquently, fiercely alive. Full of brilliant, mind-bending insights and wonderful surprises, this is the most life-affirming book I’ve read in a long time.”
—John Vaillant, National Book Award finalist for Fire Weather 

“With adventurous journeys, lively storytelling, and provocative reflection, Moor invites us to know charismatic forests through the eyes of other worldviews in order to guide us through these urgent times.”
—Robin Wall Kimmerer, #1 New York Times bestselling author of The Serviceberry

“In the course of his explorations, the author has been transformed. After reading this book, you may be, too.”
Earth Island Journal

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