But, after a broken engagement and a broken heart, he desperately needed a change of scenery. The ambitious plan he cooked up went a bit overboard in that department; Knighton set out to visit every single one of America's National Parks, from Acadia to Zion. Leave Only Footprints is the memoir of his year spent traveling across the United States, a journey that yielded his "On the Trail" series, which quickly became one of CBS Sunday Morning's most beloved segments. In this smart, informative, and often hilarious book, he'll share how his journey through these natural wonders, unchanged by man, ended up changing his worldview on everything from God to politics to love and technology. Whether it's waking up early for a naked scrub in an Arkansas bathhouse or staying up late to stargaze along our loneliest highway, Knighton goes behind the scenery to provide an unfiltered look at America. In the tradition of books like A Walk in the Woods or Turn Right at Machu Picchu, this is an irresistible mix of personal narrative and travelogue-some well-placed pop culture references, too-and a must-read for any of the 331 million yearly National Parks visitors.

    . . and then broke? How would you survive? Could you improve on humanity's original timeline? And how hard would it be to domesticate a giant wombat? With this book as your guide, you'll survive--and thrive--in any period in Earth's history. Bestselling author and time-travel enthusiast Ryan North shows you how to invent all the modern conveniences we take for granted--from first principles. This illustrated manual contains all the science, engineering, art, philosophy, facts, and figures required for even the most clueless time traveler to build a civilization from the ground up. Deeply researched, irreverent, and significantly more fun than being eaten by a saber-toothed tiger, How to Invent Everything will make you smarter, more competent, and completely prepared to become the most important and influential person ever.

    Nestled in the Appalachian mountains, Owsley County is one of the poorest counties in both Kentucky and the country. Buildings are crumbling and fields sit vacant, as tobacco farming and coal mining decline. But strong women are finding creative ways to subsist in their hollers in the hills. Cassie Chambers grew up in these hollers and, through the women who raised her, she traces her own path out of and back into the Kentucky mountains. Chambers’s Granny was a child bride who rose before dawn every morning to raise seven children. Despite her poverty, she wouldn’t hesitate to give the last bite of pie or vegetables from her garden to a struggling neighbor. Her two daughters took very different paths: strong-willed Ruth—the hardest-working tobacco farmer in the county—stayed on the family farm, while spirited Wilma—the sixth child—became the first in the family to graduate from high school, then moved an hour away for college. Married at nineteen and pregnant with Cassie a few months later, Wilma beat the odds to finish school. She raised her daughter to think she could move mountains, like the ones that kept her safe but also isolated her from the larger world. Cassie would spend much of her childhood with Granny and Ruth in the hills of Owsley County, both while Wilma was in college and after. With her “hill women” values guiding her, Cassie went on to graduate from Harvard Law. But while the Ivy League gave her knowledge and opportunities, its privileged world felt far from her reality, and she moved back home to help her fellow rural Kentucky women by providing free legal services. Appalachian women face issues that are all too common: domestic violence, the opioid crisis, a world that seems more divided by the day. But they are also community leaders, keeping their towns together in the face of a system that continually fails them. With nuance and heart, Chambers uses these women’s stories paired with her own journey to break down the myth of the hillbilly and illuminate a region whose poor communities, especially women, can lead it into the future.

    Tirelessly trekking across miles of the Thames’ muddy shores, where others only see the detritus of city life, Maiklem unearths evidence of England’s captivating, if sometimes murky, history—with some objects dating back to 43 AD, when London was but an outpost of the Roman Empire. From medieval mail worn by warriors on English battlefields to nineteenth-century glass marbles mass-produced for the nation’s first soda bottles, Maiklem deduces the historical significance of these artifacts with the quirky enthusiasm and sharp-sightedness of a twenty-first century Sherlock Holmes.Seamlessly interweaving reflections from her own life with meditations on the art of wandering, Maiklem ultimately delivers—for Anglophiles and history lovers alike—a memorable treatise on the objects we leave in our wake, and the stories they can reveal if only we take a moment to look.

    Coated in red dust, the terrain is bewilderingly empty. And yet multiple spacecraft are circling Mars, sweeping over Terra Sabaea, Syrtis Major, the dunes of Elysium, and Mare Sirenum—on the brink, perhaps, of a staggering find, one that would inspire humankind as much as any discovery in the history of modern science.In this beautifully observed, deeply personal book, Georgetown scientist Sarah Stewart Johnson tells the story of how she and other researchers have scoured Mars for signs of life, transforming the planet from a distant point of light into a world of its own.Johnson’s fascination with Mars began as a child in Kentucky, turning over rocks with her father and looking at planets in the night sky. She now conducts fieldwork in some of Earth’s most hostile environments, such as the Dry Valleys of Antarctica and the salt flats of Western Australia, developing methods for detecting life on other worlds. Here, with poetic precision, she interlaces her own personal journey—as a female scientist and a mother—with tales of other seekers, from Percival Lowell, who was convinced that a utopian society existed on Mars, to Audouin Dollfus, who tried to carry out astronomical observations from a stratospheric balloon. In the process, she shows how the story of Mars is also a story about Earth: This other world has been our mirror, our foil, a telltale reflection of our own anxieties and yearnings.Empathetic and evocative, The Sirens of Mars offers an unlikely natural history of a place where no human has ever set foot, while providing a vivid portrait of our quest to defy our isolation in the cosmos.

    We often overlook the historical link between mathematics and technological advances, says Stewart—but this connection is integral to any complete understanding of human history.Equations are modeled on the patterns we find in the world around us, says Stewart, and it is through equations that we are able to make sense of, and in turn influence, our world. Stewart locates the origins of each equation he presents—from Pythagoras's Theorem to Newton's Law of Gravity to Einstein's Theory of Relativity—within a particular historical moment, elucidating the development of mathematical and philosophical thought necessary for each equation's discovery. None of these equations emerged in a vacuum, Stewart shows; each drew, in some way, on past equations and the thinking of the day. In turn, all of these equations paved the way for major developments in mathematics, science, philosophy, and technology. Without logarithms (invented in the early 17th century by John Napier and improved by Henry Briggs), scientists would not have been able to calculate the movement of the planets, and mathematicians would not have been able to develop fractal geometry. The Wave Equation is one of the most important equations in physics, and is crucial for engineers studying the vibrations in vehicles and the response of buildings to earthquakes. And the equation at the heart of Information Theory, devised by Claude Shannon, is the basis of digital communication today.An approachable and informative guide to the equations upon which nearly every aspect of scientific and mathematical understanding depends, In Pursuit of the Unknown is also a reminder that equations have profoundly influenced our thinking and continue to make possible many of the advances that we take for granted.

    His quick mastery of quantum mechanics earned him a place at Los Alamos working on the Manhattan Project under J. Robert Oppenheimer, where the giddy young man held his own among the nation’s greatest minds. There, Feynman turned theory into practice, culminating in the Trinity test, on July 16, 1945, when the Atomic Age was born. He was only twenty-seven. And he was just getting started. In this sweeping biography, James Gleick captures the forceful personality of a great man, integrating Feynman’s work and life in a way that is accessible to laymen and fascinating for the scientists who follow in his footsteps.

    For over 100 years the community orbited around a paper mill that employs most townspeople, including three generations of Arsenault’s own family. Years after she moved away, Arsenault realized the price she paid for her seemingly secure childhood. The mill, while providing livelihoods for nearly everyone, also contributed to the destruction of the environment and the decline of the town’s economic, physical, and emotional health in a slow-moving catastrophe, earning the area the nickname “Cancer Valley.” Mill Town is an personal investigation, where Arsenault sifts through historical archives and scientific reports, talks to family and neighbors, and examines her own childhood to illuminate the rise and collapse of the working-class, the hazards of loving and leaving home, and the ambiguous nature of toxics and disease. Mill Town is a moral wake-up call that asks, Whose lives are we willing to sacrifice for our own survival?

    It was a harrowing test of endurance on a snowbound cordillera that ended in a miraculous rescue. Now comes the unflinching and emotional true story by one of the men who found his way home.Four decades after the tragedy, a climber discovered survivor Eduardo Strauch’s wallet near the memorialized crash site and returned it to him. It was a gesture that compelled Strauch to finally “break the silence of the mountains.”In this revelatory and rewarding memoir, Strauch withholds nothing as he reveals the truth behind the life-changing events that challenged him physically and tested him spiritually, but would never destroy him. In revisiting the horror story we thought we knew, Strauch shares the lessons gleaned from far outside the realm of rational learning: how surviving on the mountain, in the face of its fierce, unforgiving power and desolate beauty, forever altered his perception of love, friendship, death, fear, loss, and hope.

    That collaboration would mark the dawn of modern science . . . and end in murder.Johannes Kepler changed forever our understanding of the universe with his three laws of planetary motion. He demolished the ancient model of planets moving in circular orbits and laid the foundation for the universal law of gravitation, setting physics on the course of revelation it follows to this day. Kepler was one of the greatest astronomers of all time. Yet if it hadn't been for the now lesser-known Tycho Brahe, the man for whom Kepler apprenticed, Kepler would be a mere footnote in today's science books. Brahe was the Imperial Mathematician at the court of the Holy Roman Emperor in Prague and the most famous astronomer of his era. He was one of the first great systematic empirical scientists and one of the earliest founders of the modern scientific method. His forty years of planetary observations—an unparalleled treasure of empirical data—contained the key to Kepler's historic breakthrough. But those observations would become available to Kepler only after Brahe's death. This groundbreaking history portrays the turbulent collaboration between these two astronomers at the turn of the seventeenth century and their shattering discoveries that would mark the transition from medieval to modern science. But that is only half the story. Based on recent forensic evidence (analyzed here for the first time) and original research into medieval and Renaissance alchemy—all buttressed by in-depth interviews with leading historians, scientists, and medical specialists—the authors have put together shocking and compelling evidence that Tycho Brahe did not die of natural causes, as has been believed for four hundred years. He was systematically poisoned—most likely by his assistant, Johannes Kepler. An epic tale of murder and scientific discovery, Heavenly Intrigue reveals the dark side of one of history’s most brilliant minds and tells the story of court politics, personal intrigue, and superstition that surrounded the protean invention of two great astronomers and their quest to find truth and beauty in the heavens above.

    From Mary, Queen of Scots, trapped by her own code, to the Navajo Code Talkers who helped the Allies win World War II, to the incredible (and incredibly simple) logisitical breakthrough that made Internet commerce secure, The Code Book tells the story of the most powerful intellectual weapon ever known: secrecy.Throughout the text are clear technical and mathematical explanations, and portraits of the remarkable personalities who wrote and broke the world’s most difficult codes. Accessible, compelling, and remarkably far-reaching, this book will forever alter your view of history and what drives it. It will also make you wonder how private that e-mail you just sent really is.

    A sensational disappearance that made headlines around the world. A quest for truth that leads to death, madness or disappearance for those who seek to solve it. The Lost City of Z is a blockbuster adventure narrative about what lies beneath the impenetrable jungle canopy of the Amazon.After stumbling upon a hidden trove of diaries, New Yorker writer David Grann set out to solve "the greatest exploration mystery of the 20th century": What happened to the British explorer Percy Fawcett & his quest for the Lost City of Z?In 1925, Fawcett ventured into the Amazon to find an ancient civilization, hoping to make one of the most important discoveries in history. For centuries Europeans believed the world's largest jungle concealed the glittering kingdom of El Dorado. Thousands had died looking for it, leaving many scientists convinced that the Amazon was truly inimical to humans. But Fawcett, whose daring expeditions inspired Conan Doyle's The Lost World, had spent years building his scientific case. Captivating the imagination of millions round the globe, Fawcett embarked with his 21-year-old son, determined to prove that this ancient civilisation--which he dubbed Z--existed. Then his expedition vanished. Fawcett's fate, & the tantalizing clues he left behind about Z, became an obsession for hundreds who followed him into the uncharted wilderness. For decades scientists & adventurers have searched for evidence of Fawcett's party & the lost City of Z. Countless have perished, been captured by tribes or gone mad. As Grann delved ever deeper into the mystery surrounding Fawcett's quest, & the greater mystery of what lies within the Amazon, he found himself, like the generations who preceded him, being irresistibly drawn into the jungle's green hell. His quest for the truth & discoveries about Fawcett's fate & Z form the heart of this complexly enthralling narrative.

    But they've often been hidden in plain sight, their inventions and contributions touching our lives in ways we don't even realize.Author Claire L. Evans finally gives these unsung female heroes their due with her social history of the Broad Band, the women who made the internet what it is today. Learn from Ada Lovelace, the daughter of Lord Byron, who wove numbers into the first program for a mechanical computer in 1842. Seek inspiration from Grace Hopper, the tenacious mathematician who democratized computing by leading the charge for machine-independent programming languages after World War II. Meet Elizabeth "Jake" Feinler, the one-woman Google who kept the earliest version of the Internet online, and Stacy Horn, who ran one of the first-ever social networks on a shoestring out of her New York City apartment in the 1980s. Evans shows us how these women built and colored the technologies we can't imagine life without.Join the ranks of the pioneers who defied social convention and the longest odds to become database poets, information-wranglers, hypertext dreamers, and glass ceiling-shattering dot com-era entrepreneurs.

    "A stunning memoir from the astronaut who spent a record-breaking year aboard the International Space Station – a candid account of his remarkable voyage, the journeys that preceded it, and his colorful formative years." Inside book cover comments.

    MacLeod and her husband encountered their dream while vacationing on a remote island in the Scottish Hebrides. Enthralled by its windswept beauty, they soon were the proud owners of a near-derelict croft house--a farmer's stone cottage--on "a small acre" of land. Mary assumed duties as the island's district nurse. Call the Nurse is her account of the enchanted years she and her family spent there, coming to know its folk as both patients and friends.In anecdotes that are by turns funny, sad, moving, and tragic, she recalls them all, the crofters and their laird, the boatmen and tradesmen, young lovers and forbidding churchmen. Against the old-fashioned island culture and the grandeur of mountain and sea unfold indelible stories: a young woman carried through snow for airlift to the hospital; a rescue by boat; the marriage of a gentle giant and the island beauty; a ghostly encounter; the shocking discovery of a woman in chains; the flames of a heather fire at night; an unexploded bomb from World War II; and the joyful, tipsy celebration of a ceilidh. Gaelic fortitude meets a nurse's compassion in these wonderful true stories from rural Scotland.