The idea of a missing link between humanity and our animal ancestors predates evolution and popular science and actually has religious roots in the deist concept of the Great Chain of Being. Yet, the metaphor has lodged itself in the contemporary imagination, and new fossil discoveries are often hailed in headlines as revealing the elusive transitional step, the moment when we stopped being “animal” and started being “human.” In The Accidental Species, Henry Gee, longtime paleontology editor at Nature, takes aim at this misleading notion, arguing that it reflects a profound misunderstanding of how evolution works and, when applied to the evolution of our own species, supports mistaken ideas about our own place in the universe.

 

Gee presents a robust and stark challenge to our tendency to see ourselves as the acme of creation. Far from being a quirk of religious fundamentalism, human exceptionalism, Gee argues, is an error that also infects scientific thought. Touring the many features of human beings that have recurrently been used to distinguish us from the rest of the animal world, Gee shows that our evolutionary outcome is one possibility among many, one that owes more to chance than to an organized progression to supremacy. He starts with bipedality, which he shows could have arisen entirely by accident, as a by-product of sexual selection, moves on to technology, large brain size, intelligence, language, and, finally, sentience. He reveals each of these attributes to be alive and well throughout the animal world—they are not, indeed, unique to our species.

The Accidental Species combines Gee’s firsthand experience on the editorial side of many incredible paleontological findings with healthy skepticism and humor to create a book that aims to overturn popular thinking on human evolution—the key is not what’s missing, but how we’re linked.

Our understanding of vertebrate origins and the backbone of human history evolves with each new fossil find and DNA map. Many species have now had their genomes sequenced, and molecular techniques allow genetic inspection of even non-model organisms. But as longtime Nature editor Henry Gee argues in Across the Bridge, despite these giant strides and our deepening understanding of how vertebrates fit into the tree of life, the morphological chasm between vertebrates and invertebrates remains vast and enigmatic.

As Gee shows, even as scientific advances have falsified a variety of theories linking these groups, the extant relatives of vertebrates are too few for effective genetic analysis. Moreover, the more we learn about the species that do remain—from sea-squirts to starfish—the clearer it becomes that they are too far evolved along their own courses to be of much use in reconstructing what the latest invertebrate ancestors of vertebrates looked like. Fossils present yet further problems of interpretation. Tracing both the fast-changing science that has helped illuminate the intricacies of vertebrate evolution as well as the limits of that science, Across the Bridge helps us to see how far the field has come in crossing the invertebrate-to-vertebrate divide—and how far we still have to go.

All organisms live in clusters, but such fractured local populations, or demes, nonetheless maintain connectivity with one another by some amount of gene flow between them. Most such metapopulations occur naturally, like clusters of amphibians in vernal ponds or baboon troops spread across the African veldt. Others have been created as human activities fragment natural landscapes, as in stands of trees separated by roads. As landscape change has accelerated, understanding how these metapopulations function—and specifically how they adapt—has become crucial to ecology and to our very understanding of evolution itself.

With Adaptation in Metapopulations, Michael J. Wade explores a key component of this new understanding of evolution: interaction. Synthesizing decades of work in the lab and in the field in a book both empirically grounded and underpinned by a strong conceptual framework, Wade looks at the role of interaction across scales from gene selection to selection at the level of individuals, kin, and groups. In so doing, he integrates molecular and organismal biology to reveal the true complexities of evolutionary dynamics from genes to metapopulations.

When did the human species turn against the planet that we depend on for survival? Human industry and consumption of resources have altered the climate, polluted the water and soil, destroyed ecosystems, and rendered many species extinct, vastly increasing the likelihood of an ecological catastrophe. How did humankind come to rule nature to such an extent? To regard the planet’s resources and creatures as ours for the taking? To find ourselves on a seemingly relentless path toward ecocide?

In After Eden, Kirkpatrick Sale answers these questions in a radically new way. Integrating research in paleontology, archaeology, and anthropology, he points to the beginning of big-game hunting as the origin of Homo sapiens’ estrangement from the natural world. Sale contends that a new, recognizably modern human culture based on the hunting of large animals developed in Africa some 70,000 years ago in response to a fierce plunge in worldwide temperature triggered by an enormous volcanic explosion in Asia. Tracing the migration of populations and the development of hunting thousands of years forward in time, he shows that hunting became increasingly adversarial in relation to the environment as people fought over scarce prey during Europe’s glacial period between 35,000 and 10,000 years ago. By the end of that era, humans’ idea that they were the superior species on the planet, free to exploit other species toward their own ends, was well established.

After Eden is a sobering tale, but not one without hope. Sale asserts that Homo erectus, the variation of the hominid species that preceded Homo sapiens and survived for nearly two million years, did not attempt to dominate the environment. He contends that vestiges of this more ecologically sound way of life exist today—in some tribal societies, in the central teachings of Hinduism and Buddhism, and in the core principles of the worldwide environmental movement—offering redemptive possibilities for ourselves and for the planet.

Although Alfred Russel Wallace (1823–1913) was one of the most famous scientists in the world at the time of his death at the age of ninety, today he is known to many as a kind of “almost-Darwin,” a secondary figure relegated to the footnotes of Darwin’s prodigious insights. But this diminution could hardly be less justified. Research into the life of this brilliant naturalist and social critic continues to produce new insights into his significance to history and his role in helping to shape modern thought.

Wallace declared his eight years of exploration in southeast Asia to be “the central and controlling incident” of his life. As 2019 marks one hundred and fifty years since the publication of The Malay Archipelago, Wallace’s canonical work chronicling his epic voyage, this collaborative book gathers an interdisciplinary array of writers to celebrate Wallace’s remarkable life and diverse scholarly accomplishments. Wallace left school at the age of fourteen and was largely self-taught, a voracious curiosity and appetite for learning sustaining him throughout his long life. After years as a surveyor and builder, in 1848 he left Britain to become a professional natural history collector in the Amazon, where he spent four years. Then, in 1854, he departed for the Malay Archipelago. It was on this voyage that he constructed a theory of natural selection similar to the one Charles Darwin was developing, and the two copublished papers on the subject in 1858, some sixteen months before the release of Darwin’s On the Origin of Species.

But as the contributors to the Companion show, this much-discussed parallel evolution in thought was only one epoch in an extraordinary intellectual life. When Wallace returned to Britain in 1862, he commenced a career of writing on a huge range of subjects extending from evolutionary studies and biogeography to spiritualism and socialism. An Alfred Russel Wallace Companion provides something of a necessary reexamination of the full breadth of Wallace’s thought—an attempt to describe not only the history and present state of our understanding of his work, but also its implications for the future.

Pronghorn antelope are the fastest runners in North America, clocked at speeds of up to 100 kilometers per hour. Yet none of their current predators can come close to running this fast. Pronghorn also gather in groups, a behavior commonly viewed as a "safety in numbers" defense. But again, none of their living predators are fearsome enough to merit such a response.

In this elegantly written book, John A. Byers argues that these mystifying behaviors evolved in response to the dangerous predators with whom pronghorn shared their grassland home for nearly four million years: among them fleet hyenas, lions, and cheetahs. Although these predators died out ten thousand years ago, pronghorn still behave as if they were present—as if they were living with the ghosts of predators past.

Byers's provocative hypothesis will stimulate behavioral ecologists and mammalogists to consider whether other species' adaptations are also haunted by selective pressures from predators past. The book will also find a ready audience among evolutionary biologists and paleontologists.

There’s no sound quite like it, or as viscerally terrifying: the ominous rattle of the timber rattlesnake. It’s a chilling shorthand for imminent danger, and a reminder of the countless ways that nature can suddenly snuff us out.
 
Yet most of us have never seen a timber rattler. Though they’re found in thirty-one states, and near many major cities, in contemporary America timber rattlesnakes are creatures mostly of imagination and innate fear.
 
Ted Levin aims to change that with America’s Snake, a portrait of the timber rattlesnake, its place in America’s pantheon of creatures and in our own frontier history—and of the heroic efforts to protect it against habitat loss, climate change, and the human tendency to kill what we fear. Taking us from labs where the secrets of the snake’s evolutionary history are being unlocked to far-flung habitats whose locations are fiercely protected by biologists and dedicated amateur herpetologists alike, Levin paints a picture of a fascinating creature: peaceable, social, long-lived, and, despite our phobias, not inclined to bite. The timber rattler emerges here as emblematic of America and also, unfortunately, of the complicated, painful struggles involved in protecting and preserving the natural world.
 
A wonderful mix of natural history, travel writing, and exemplary journalism, America’s Snake is loaded with remarkable characters—none more so than the snake at its heart: frightening, perhaps; endangered, certainly; and unquestionably unforgettable.

Living amniotes—including all mammals, birds, crocodilians, snakes, and turtles—comprise an extraordinarily varied array of more than 21,000 species. Found in every major habitat on earth, they possess a truly remarkable range of morphological, ecological, and behavioral adaptations. The fossil record of amniotes extends back three hundred million years and reveals much about modern biological diversity of form and function.

A collaborative effort of twenty-four researchers, Amniote Paleobiology presents thirteen new and important scientific perspectives on the evolution and biology of this familiar group. It includes new discoveries of dinosaurs and primitive relatives of mammals; studies of mammalian chewing and locomotion; and examinations of the evolutionary process in plesiosaurs, mammals, and dinosaurs. Emphasizing the rich variety of analytical techniques available to vertebrate paleontologists—from traditional description to multivariate morphometrics and complex three-dimensional kinematics—Amniote Paleobiology seeks to understand how species are related to each other and what these relationships reveal about changes in anatomy and function over time. A timely synthesis of modern contributions to the field of evolutionary studies, Amniote Paleobiology furthers our understanding of this diverse group.

Galileo wrote that “nature cannot produce a horse as large as twenty ordinary horses or a giant ten times taller than an ordinary man unless by miracle or by greatly altering the proportions of his limbs and especially of his bones”—a statement that wonderfully captures a long-standing scientific fascination with body size. Why are organisms the size that they are? And what determines their optimum size?          

           

This volume explores animal body size from a macroecological perspective, examining species, populations, and other large groups of animals in order to uncover the patterns and causal mechanisms of body size throughout time and across the globe. The chapters represent diverse scientific perspectives and are divided into two sections. The first includes chapters on insects, snails, birds, bats, and terrestrial mammals and discusses the body size patterns of these various organisms. The second examines some of the factors behind, and consequences of, body size patterns and includes chapters on community assembly, body mass distribution, life history, and the influence of flight on body size.

Ask anyone who has owned a pet and they’ll assure you that, yes, animals have personalities. And science is beginning to agree. Researchers have demonstrated that both domesticated and nondomesticated animals—from invertebrates to monkeys and apes—behave in consistently different ways, meeting the criteria for what many define as personality. But why the differences, and how are personalities shaped by genes and environment? How did they evolve? The essays in Animal Personalities reveal that there is much to learn from our furred and feathered friends.

           

The study of animal personality is one of the fastest-growing areas of research in behavioral and evolutionary biology. Here Claudio Carere and Dario Maestripieri, along with a host of scholars from fields as diverse as ecology, genetics, endocrinology, neuroscience, and psychology, provide a comprehensive overview of the current research on animal personality. Grouped into thematic sections, chapters approach the topic with empirical and theoretical material and show that to fully understand why personality exists, we must consider the evolutionary processes that give rise to personality, the ecological correlates of personality differences, and the physiological mechanisms underlying personality variation.

In nature, the ability to defend against predators is fundamental to an animal's survival. From the giraffes that rely on their spotted coats to blend into the patchy light of their woodland habitats to the South American sea lions that pile themselves in heaps to ward off the killer whales that prey on them in the shallow surf, defense strategies in the animal kingdom are seemingly innumerable.

In Antipredator Defenses in Birds and Mammals, Tim Caro ambitiously synthesizes predator defenses in birds and mammals and integrates all functional and evolutionary perspectives on antipredator defenses that have developed over the last century. Structured chronologically along a hypothetical sequence of predation—Caro evokes a gazelle fawn desperate to survive a cheetah attack to illustrate the continuum of the evolution of antipredator defenses—Antipredator Defenses in Birds and Mammals considers the defenses that prey use to avoid detection by predators; the benefits of living in groups; morphological and behavioral defenses in individuals and groups; and, finally, flight and adaptations of last resort.

Antipredator Defenses in Birds and Mammals will be of interest to both specialists and general readers interested in ecological issues.

Scores of wild species and ecosystems around the world face a variety of human-caused threats, from habitat destruction and fragmentation to rapid climate change. But there is hope, and it, too, comes in a most human form: zoos and aquariums. Gathering a diverse, multi-institutional collection of leading zoo and aquarium scientists as well as historians, philosophers, biologists, and social scientists, The Ark and Beyond traces the history and underscores the present role of these organizations as essential conservation actors. It also offers a framework for their future course, reaffirming that if zoos and aquariums make biodiversity conservation a top priority, these institutions can play a vital role in tackling conservation challenges of global magnitude.

While early menageries were anything but the centers of conservation that many zoos are today, a concern with wildlife preservation has been an integral component of the modern, professionally run zoo since the nineteenth century. From captive breeding initiatives to rewilding programs, zoos and aquariums have long been at the cutting edge of research and conservation science, sites of impressive new genetic and reproductive techniques. Today, their efforts reach even further beyond recreation, with educational programs, community-based conservation initiatives, and international, collaborative programs designed to combat species extinction and protect habitats at a range of scales. Addressing related topics as diverse as zoo animal welfare, species reintroductions, amphibian extinctions, and whether zoos can truly be “wild,” this book explores the whole range of research and conservation practices that spring from zoos and aquariums while emphasizing the historical, scientific, and ethical traditions that shape these efforts. Also featuring an inspiring foreword by the late George Rabb, president emeritus of the Chicago Zoological Society / Brookfield Zoo, The Ark and Beyond illuminates these institutions’ growing significance to the preservation of global biodiversity in this century.