Living things are organized in a hierarchy of levels. Genes group together in cells, cells group together in organisms, and organisms group together in societies. Even different species form mutualistic partnerships. Throughout the history of life, previously independent units have formed groups that, in time, have come to resemble individuals in their own right. Evolutionary biologists term such events "the major transitions." The process common to them all is social evolution. Each transition occurs only if natural selection favors one unit joining with another in a new kind of group.
This book presents a fresh synthesis of the principles of social evolution that underlie the major transitions, explaining how the basic theory underpinning social evolution - inclusive fitness theory - is central to understanding each event. The book defines the key stages in a major transition, then highlights the shared principles operating at each stage across the transitions as a whole. It addresses in new ways the question of how, once they have arisen, organisms and societies become more individualistic.

Bumblebees are familiar and charismatic insects, occurring throughout much of the world. They are increasingly being used as a model organism for studying a wide range of ecological and behavioural concepts, such as social organization, optimal foraging theories, host-parasite interactions, and pollination. Recently they have become a focus for conservationists due to mounting evidence of range contractions and catastrophic extinctions with some species disappearing from entire continents (e.g. in North America). Only by improving our understanding of their ecology can we devise sensible plans to conserve them. The role of bumblebees as invasive species (e.g. Bombus terrestris in Japan) has also become topical with the growing trade in commercial bumblebee nests for tomato pollination leading to establishment of non-native bumblebees in a number of countries.
Since the publication of the first edition of the book, there have been hundreds of research papers published on bumblebees. There is clearly a continuing need for an affordable, well-illustrated, and appealing text that makes accessible all of the major advances in understanding of the behaviour and ecology of bumblebees that have been made in the last 30 years.

This volume brings together the world's leading experts on disgust to fully explore this understudied behavior. Disgust is unique among emotions. It is, at once, perhaps the most "basic" and visceral of feelings while also being profoundly shaped by learning and culture. Evident from the earliest months of life, disgust influences individual behavior and shapes societies across political, social, economic, legal, ecological, and health contexts. As an emotion that evolved to prevent our eating contaminated foods, disgust is now known to motivate wider behaviors, social processes, and customs. On a global scale, disgust finds a place in population health initiatives, from hand hygiene to tobacco warning labels, and may underlie aversions to globalization and other progressive agendas, such as those regarding sustainable consumption and gay marriage. This comprehensive work provides cutting-edge, timely, and succinct theoretical and empirical contributions illustrating the breadth, rigor, relevance, and increasing maturity of disgust research to modern life. It is relevant to a wide range of psychological research and is particularly important to behavior viewed through an evolutionary lens, As such, it will stimulate further research and clinical applications that allow for a broader conceptualization of human behavior. The reader will find: Succinct and accessible summaries of key perspectives Highlights of new scientific developments A rich blend of theoretical and empirical chapters

Communication is essential for all forms of social interaction, from parental care to mate choice and cooperation. This is evident for human societies but less obvious for bacterial biofilms, ant colonies or flocks of birds. The major disciplines of communication research have tried to identify common core principles, but syntheses have been few because historical barriers have limited interaction between different research fields.
Sociobiology of Communication is a timely and novel synthesis. It bridges many of the gaps between proximate and ultimate levels of analysis, between empirical model systems, and between biology and the humanities. The book offers the complementary approaches of a distinguished group of authors spanning a large diversity of research programs, addressing, for example, the genetic basis of bacterial communication, dishonest communication in insect societies, sexual selection and network communication among colonial vertebrates. Other chapters explore the role of communication in genomic conflict and self-organisation, and how linguistics, psychology and philosophy may ultimately contribute to a biological understanding of human mate choice and the evolution of human societies.
This highly interdisciplinary book highlights key examples of modern research to explore the genetic, neurobiological, physiological, chemical and behavioural basis of social communication. It identifies where consensus on the general principles is emerging and where the major future challenges are to be found. The book is therefore suitable for both for graduate students and professionals in evolutionary biology and behavioural ecology seeking novel inspiration, and for a wideracademic audience, including social and medical scientists who would like to explore what evolutionary approaches can offer to their fields.

Communication is essential for all forms of social interaction, from parental care to mate choice and cooperation. This is evident for human societies but less obvious for bacterial biofilms, ant colonies or flocks of birds. The major disciplines of communication research have tried to identify common core principles, but syntheses have been few because historical barriers have limited interaction between different research fields.
Sociobiology of Communication is a timely and novel synthesis. It bridges many of the gaps between proximate and ultimate levels of analysis, between empirical model systems, and between biology and the humanities. The book offers the complementary approaches of a distinguished group of authors spanning a large diversity of research programs, addressing, for example, the genetic basis of bacterial communication, dishonest communication in insect societies, sexual selection and network communication among colonial vertebrates. Other chapters explore the role of communication in genomic conflict and self-organisation, and how linguistics, psychology and philosophy may ultimately contribute to a biological understanding of human mate choice and the evolution of human societies.
This highly interdisciplinary book highlights key examples of modern research to explore the genetic, neurobiological, physiological, chemical and behavioural basis of social communication. It identifies where consensus on the general principles is emerging and where the major future challenges are to be found. The book is therefore suitable for both for graduate students and professionals in evolutionary biology and behavioural ecology seeking novel inspiration, and for a wideracademic audience, including social and medical scientists who would like to explore what evolutionary approaches can offer to their fields.

We know that animals cross miles of water, land, and sky with pinpoint precision on a daily basis. But it is only in recent years that scientists have learned how these astounding feats of navigation are actually accomplished. With colorful and thorough detail, "Nature's Compass" explores the remarkable methods by which animals find their way both near home and around the globe. Noted biologist James Gould and popular science writer Carol Gould delve into the elegant strategies and fail-safe backup systems, the invisible sensitivities and mysterious forces, and incredible mental abilities used by familiar and rare species, as they investigate a multitude of navigation strategies, from the simple to the astonishing.

The Goulds discuss how animals navigate, without instruments and training, at a level far beyond human talents. They explain how animals measure time and show how the fragile monarch butterfly employs an internal clock, calendar, compass, and map to commence and measure the two-thousand-mile annual journey to Mexico--all with a brain that weighs only a few thousandths of an ounce. They look at honey bees and how they rely on the sun and mental maps to locate landmarks such as nests and flowers. And they examine whether long-distance migrants, such as the homing pigeon, depend on a global positioning system to let them know where they are. Ultimately, the authors ask if the disruption of migratory paths through habitat destruction and global warming is affecting and endangering animal species.

Providing a comprehensive picture of animal navigation and migration, "Nature's Compass" decodes the mysteries of this extraordinary aspect of natural behavior.

Honeybees make decisions collectively--and democratically. Every year, faced with the life-or-death problem of choosing and traveling to a new home, honeybees stake everything on a process that includes collective fact-finding, vigorous debate, and consensus building. In fact, as world-renowned animal behaviorist Thomas Seeley reveals, these incredible insects have much to teach us when it comes to collective wisdom and effective decision making. A remarkable and richly illustrated account of scientific discovery, "Honeybee Democracy" brings together, for the first time, decades of Seeley's pioneering research to tell the amazing story of house hunting and democratic debate among the honeybees.

In the late spring and early summer, as a bee colony becomes overcrowded, a third of the hive stays behind and rears a new queen, while a swarm of thousands departs with the old queen to produce a daughter colony. Seeley describes how these bees evaluate potential nest sites, advertise their discoveries to one another, engage in open deliberation, choose a final site, and navigate together--as a swirling cloud of bees--to their new home. Seeley investigates how evolution has honed the decision-making methods of honeybees over millions of years, and he considers similarities between the ways that bee swarms and primate brains process information. He concludes that what works well for bees can also work well for people: any decision-making group should consist of individuals with shared interests and mutual respect, a leader's influence should be minimized, debate should be relied upon, diverse solutions should be sought, and the majority should be counted on for a dependable resolution.

An impressive exploration of animal behavior, "Honeybee Democracy" shows that decision-making groups, whether honeybee or human, can be smarter than even the smartest individuals in them.

Understanding of animal social and sexual evolution has seen a renaissance in recent years with discoveries of frequent infidelity in apparently monogamous species, the importance of sperm competition, active female mate choice, and eusocial behavior in animals outside the traditional social insect groups. Each of these findings has raised new questions, and suggested new answers, about the evolution of behavioral interactions among animals. This volume synthesizes recent research on the sexual and social biology of the Crustacea, one of the dominant invertebrate groups on earth. Its staggering diversity includes ecologically important inhabitants of nearly every environment from deep-sea trenches, through headwater streams, to desert soils. The wide range of crustacean phenotypes and environments is accompanied by a comparable diversity of behavioral and social systems, including the elaborate courtship and wildly exaggerated morphologies of fiddler crabs, the mysterious queuing behavior of migrating spiny lobsters, and even eusociality in coral-reef shrimps. This diversity makes crustaceans particularly valuable for exploring the comparative evolution of sexual and social systems. Despite exciting recent advances, however, general recognition of the value of Crustacea as models has lagged behind that of the better studied insects and vertebrates. This book synthesizes the state of the field in crustacean behavior and sociobiology and places it in a conceptually based, comparative framework that will be valuable to active researchers and students in animal behavior, ecology, and evolutionary biology. It brings together a group of internationally recognized and rising experts in fields related to crustacean behavioral ecology, ranging from physiology and functional morphology, through mating and social behavior, to ecology and phylogeny. Each chapter makes connections to other, non-crustacean taxa, and the volume closes with a summary section that synthesizes the contributions, discusses anthropogenic impacts, highlights unanswered questions, and provides a vision for profitable future research.

Many animals, including humans, acquire valuable skills and knowledge by copying others. Scientists refer to this as social learning. It is one of the most exciting and rapidly developing areas of behavioral research and sits at the interface of many academic disciplines, including biology, experimental psychology, economics, and cognitive neuroscience. "Social Learning" provides a comprehensive, practical guide to the research methods of this important emerging field."" William Hoppitt and Kevin Laland define the mechanisms thought to underlie social learning and demonstrate how to distinguish them experimentally in the laboratory. They present techniques for detecting and quantifying social learning in nature, including statistical modeling of the spatial distribution of behavior traits. They also describe the latest theory and empirical findings on social learning strategies, and introduce readers to mathematical methods and models used in the study of cultural evolution. This book is an indispensable tool for researchers and an essential primer for students.Provides a comprehensive, practical guide to social learning research Combines theoretical and empirical approaches Describes techniques for the laboratory and the field Covers social learning mechanisms and strategies, statistical modeling techniques for field data, mathematical modeling of cultural evolution, and more

This book is the only account of what honeybees actually see. Bees detect some visual features such as edges and colours, but there is no sign that they reconstruct patterns or put together features to form objects. Bees detect motion but have no perception of what it is that moves, and certainly they do not recognize "things" by their shapes. Yet they clearly see well enough to fly and find food with a minute brain. Bee vision is therefore relevant to the construction of simple artificial visual systems, for example for mobile robots. The surprising conclusion is that bee vision is adapted to the recognition of places, not things. In this volume, Adrian Horridge also sets out the curious and contentious history of how bee vision came to be understood, with an account of a century of neglect of old experimental results, errors of interpretation, sharp disagreements, and failures of the scientific method. The design of the experiments and the methods of making inferences from observations are also critically examined, with the conclusion that scientists are often hesitant, imperfect and misleading, ignore the work of others, and fail to consider alternative explanations. The erratic path to understanding makes interesting reading for anyone with an interest in the workings of science but particularly those researching insect vision and invertebrate sensory systems.

Strategies and Tactics of Behavioral Research and Practice focuses on the most effective methods for measuring and evaluating changes in behavior. The authors provide the rationale for different procedures for measuring behavior and designing within-subject comparisons between control and intervention conditions. The text explains the strengths and weaknesses of methodological alternatives for every topic so that behavioral researchers and practitioners can make the best decisions in each situation. This classic text has been extensively revised to be more accessible and practical. Not only does it feature much more discussion of how research methods are relevant to today's practitioners, it also includes additional examples based on field research and service delivery scenarios. With expanded coverage on creating experimental designs, as well as new chapters on behavioral assessment, the statistical analysis of data, and ethical issues associated with research methods, this book provides a strong foundation for direct behavioral measurement, within-subject research design, and interpretation of behavioral interventions. Enriched with more pedagogical features, including key terms, tables summarizing important points, figures to help readers visualize text, and updated examples and suggested readings, this book is an invaluable resource for students taking courses in research methods. This book is appropriate for researchers and practitioners in behavior analysis, psychology, education, social work, and other social and health science programs that address questions about behavior in research or practice settings.

"Cheetahs of the Serengeti Plains" is the most comprehensive account of carnivore social behavior to date. Synthesizing more than a decade of research in the wild, this book offers a detailed account of the behavior and ecology of cheetahs. Compared with other large cats, and other mammals, cheetahs have an unusual breeding system; whereas lions live in prides and tigers are solitary, some cheetahs live in groups while others live by themselves. Tim Caro explores group and solitary living among cheetahs and discovers that the causes of social behavior vary dramatically, even within a single species.
Why do cheetah cubs stay with their mother for a full year after weaning? Why do adolescents remain in groups? Why do adult males live in permanent associations with each other? Why do adult females live alone? Through observations on the costs and benefits of group living, Caro offers new insight into the complex behavior of this extraordinary species. For example, contrary to common belief about cooperative hunting in large carnivores, he shows that neither adolescents nor adult males benefit from hunting in groups.
With many surprising findings, and through comparisons with other cat species, Caro enriches our understanding of the evolution of social behavior and offers new perspectives on conservation efforts to save this charismatic and endangered carnivore.

To understand what is happening in the brain in the moment you decide, at will, to summon to consciousness a passage of Mozart's music, or decide to take a deep breath, is like trying to "catch a phantom by the tail". Consciousness remains that most elusive of all human phenomena - one so mysterious, one that even our highly developed knowledge of brain function can only partly explain. This book is unique in tracing the origins of consciousness. It takes the investigation back many years in an attempt to uncover just how consciousness might have first emerged. Consciousness did not develop suddenly in humans - it evolved gradually. In 'The Primordial Emotions', Derek Denton, a world renowned expert on animal instinct and a leader in integrative physiology, investigates the evolution of consciousness. Central to the book is the idea that the primal emotions - elements of instinctive behaviour - were the first dawning of consciousness. Throughout he examines instinctive behaviours, such as hunger for air, hunger for minerals, thirst, and pain, arguing that the emotions elicited from these behaviours and desire for gratification culminated in the first conscious states. To develop the theory he looks at behaviour at different levels of the evolutionary tree, for example of octopuses, fish, snakes, birds, and elephants. Coupled with findings from neuroimaging studies, and the viewpoints on consciousness from some of the key figures in philosophy and neuroscience, the book presents an accessible and groundbreaking new look at the problem of consciousness.

As a model organism, the chick has provided valuable insights into broad issues of development in higher animals. The complex interactions between genetic, hormonal and environmental factors which occur in the developing chick provide a potent argument against unitary causal explanations for differences in behaviour. Study of the behaviour of the chick is also relevant to poultry science and the welfare of domesticated birds. This book reviews research on the development of brain and behaviour in the chick and juxtaposes this with similar work on other avian and, to a lesser extent, mammalian species. It begins by outlining the developmental stages of the chick embryo, including the effects of environmental stimulation. Behaviour and the neurochemistry of development and memory formation in the posthatching period are then discussed. The transitions that occur during the first two to three weeks of posthatching life are described, particularly in terms of changing hemispheric dominance. The final chapter examines avian cognition and some issues of welfare for the domestic chicken. The book provides a thorough review of the subject and will interest workers in animal neurophysiology and behaviour, experimental psychologists, and poultry scientists.

Essentials of Animal Behaviour is an introduction to the study of animal behavior that is primarily intended for first- or second-year undergraduates. The book aims to get across the basic principles of the subject as briefly and lucidly as possible with the aid of carefully selected examples from both recent and classic research, together with numerous illustrations. The text will stimulate readers with its active and exciting treatment of the research, and will lay a solid foundation on which further study may be based. Its simple and readable style, helped by an extensive glossary, will make it useful and enjoyable reading for all those with an interest in the subjects of animal behavior, behavioral ecology, and comparative psychology.

Just over one hundred and thirty years ago Charles Darwin, in The Descent of Man and Selection in Relation to Sex (1871), developed remarkably accurate conclusions about man's ancestry, based on a review of general comparative anatomy and psychology in which he regarded sexual selection as a necessary part of the evolutionary process. But the attention of biologists turned to the more general concept of natural selection, in which sexual selection plays a complex role that has been little understood. This volume significantly broadens the scope of modern evolutionary biology by looking at this important and long neglected concept of great importance.

In this book, which is the first full discussion of sexual selection since 1871, leading biologists bring modern genetic theory and behavior observation to bear on the subject. The distinguished authors consider many aspects of sexual selection in many species, including man, within the context of contemporary evolutionary theory and research. The result is a remarkably original and well-rounded view of the whole concept that will be invaluable especially to students of evolution and human sexual behavior. The lucid authority of the contributors and the importance of the topic will interest all who share in man's perennial fascination with his own history.

The book will be of central importance to a wide variety of professionals, including biologists, anthropologists, and geneticists. It will be an invaluable supplementary text for courses in vertebrate biology, theory of evolution, genetics, and physical anthropology. It is especially important with the emergence of alternative explanations of human development, under the rubric of creationism and doctrines of intelligent design.

Are humans unique in having self-reflective consciousness? Or can precursors to this central form of human consciousness be found in non-human species? The Missing Link in Cognition brings together a diverse group of researchers who have been investigating this question from a variety of perspectives, including the extent to which non-human primates, and, indeed, young children, have consciousness, a sense of self, thought process, metacognitions, and representations. Some of the participants--Kitcher, Higgins, Nelson, and Tulving--argue that these types of cognitive abilities are uniquely human, whereas others--Call, Hampton, Kinsbourne, Menzel, Metcalfe, Schwartz, Smith, and Terrace--are convinced that at least the precursors to self-reflective consciousness exist in non-human primates.
Their debate focuses primarily on the underpinnings of consciousness. Some of the participants believe that consciousness depends on representational thought and on the mental manipulation of such representations. Is representational thought enough to ensure consciousness, or does one need more? If one needs more, exactly what is needed? Is reflection upon the representations, that is, metacognition, the link? Does a realization of the contingencies, that is, "knowing that," in Gilbert Ryle's terminology, ensure that a person or an animal is conscious? Is true episodic memory needed for consciousness, and if so, do any animals have it? Is it possible to have episodic memory or, indeed, any self-reflective processing, without language?
Other participants believe that consciousness is inextricably intertwined with a sense of self or self-awareness. From where does this sense of self or self-awareness arise? Some of the participants believe that it develops only through the use of language and the narrative form. If it does develop in this way, what about claims of a sense of self or self-awareness in non-human animals? Others believe that the autobiographical record implied by episodic memory is fundamental. To what extent must non-human animals have the linguistic, metacognitive, and/or representational abilities to develop a sense of self or self-awareness? These and other related concerns are crucial in this volume's lively debate over the nature of the missing cognitive link, and whether gorillas, chimps, or other species might be more like humans than many have supposed.

In this first comprehensive synthesis of the literature on food hoarding in animals, Stephen B. Vander Wall discusses how animals store food, how they use food and how this use affects individual fitness, why and how food hoarding evolved, how cached food is lost, mechanisms for protecting and recovering cached food, physiological and behavioral factors that influence hoarding, and the impact that hoarding animals have on plant populations and plant dispersal. He then provides detailed coverage of hoarding behavior across taxa--mammals, birds, and arthropods--to address issues in evolution, ecology, and behavior.
Drawings, photographs, and appendixes document complex and intrinsically interesting food-hoarding behaviors, and the bibliography of nearly 1,500 sources is itself an invaluable and unique reference.

Body fluid regulation is pivotal to human health and is served by extensive clinical and pre-clinical science. By combining modern advances with previous findings in the field, this book presents a comprehensive treatment of major experiments, theories, and new advances in the field of body fluid regulation, thirst, and drinking. It features the main integrative brain mechanisms for fluid regulation, the development of such systems, fluid balance during heat and exercise, aging and clinical disorders, and comparative aspects of fluid regulation. The volume focuses on mammalian thirst or drinking behaviour alongside relevant aspects of the physiology of fluid balance. The principal fluid compartments and their regulation by both intakes and losses are highlighted, using both human and animal studies to illustrate the main concepts.

Better known as the "predator-prey relationship," the consumer-resource relationship means the situation where a single species of organisms consumes for survival and reproduction. For example, Escherichia coli consumes glucose, cows consume grass, cheetahs consume baboons; these three very different situations, the first concerns the world of bacteria and the resource is a chemical species, the second concerns mammals and the resource is a plant, and in the final case the consumer and the resource are mammals, have in common the fact of consuming. In a chemostat, microorganisms generally consume (abiotic) minerals, but not always, bacteriophages consume bacteria that constitute a biotic resource. 'The Chemostat' book dealt only with the case of abiotic resources. Mathematically this amounts to replacing in the two equation system of the chemostat the decreasing function by a general increasing then decreasing function. This simple change has greatly enriched the theory. This book shows in this new framework the problem of competition for the same resource.

This book explores the relationship between cellular processes and animal behaviour. It does this by focusing on the domain of navigation, bringing together scientists from either side of the brain-behaviour divide in an attempt to explain the linkage between spatial behaviour and the underlying activity of neurons.

The Neurobiology of Spatial Behaviour is organised into two sections. Section one deals with the so-called 'higher' levels of description - studies of spatial behaviour and the brain areas that might underlie such behaviour. The section begins with insects, remarkably sophisticated navigators, and ends with humans, examining along the way issues such as whether animal brains contain maps and whether spatial and non-spatial information interact, and if so, how? Section two delves further into the brain and focuses on the mammalian representation of space and the role of place cells.

These issues have far wider ramifications that simply helping us to understand the process of navigation. This system might provide a model for how other forms of knowledge, beliefs and intentions are encoded in neurons. As such, the book will be of interest to an interdisciplinary audience, including ethologists, psychologists, behavioural neuroscientists, computational modelers, physiological neuroscientists and molecular biologists.

In 1953 a young female Japanese macaque called Imo began washing sweet potatoes before eating them, presumably to remove dirt and sand grains. Soon other monkeys had adopted this behaviour, and potato-washing gradually spread throughout the troop. When, three years after her first invention, Imo devised a second novel foraging behaviour, that of separating wheat from sand by throwing mixed handfuls into water and scooping out the floating grains, she was almost instantly heralded around the world as a 'monkey genius'. Imo is probably the most celebrated of animal innovators. In fact, many animals will invent new behaviour patterns, adjust established behaviours to a novel context, or respond to stresses in an appropriate and novel manner.

Innovation is an important component of behavioural flexibility, vital to the survival of individuals in species with generalist or opportunistic lifestyles, and potentially of critical importance to those endangered or threatened species forced to adjust to changed or impoverished environments. Innovation may also have played a central role in avian and primate brain evolution. Yet until recently animal innovation has been subject to almost complete neglect by behavioural biologists, psychologists, social learning researchers, and conservation-minded biologists.

This collection of stimulating and readable articles by leading scientific authorities is the first ever book on 'animal innovation', designed to put the topic of animal innovation on the map and heighten awareness of this developing field.

Originally published in 1988, this title explores and contrasts means and ends psychology with conventional psychology - that of stimuli and response. The author develops this comparison by exploring the general nature of psychological phenomena and clarifying many persistent doubts about psychology. She contrasts conventional psychology (stimuli and responses) involving reductionistic, organocentric, and mechanistic metatheory with alternative psychology (means and ends) that is autonomous, contextual, and evolutionary.

In social relationships-whether between mates, parents and offspring, or friends-we find much of life's meaning. But in these relationships, so critical to our well-being, might we also detect the workings, even directives, of biology? This book, a rare melding of human and animal research and theoretical and empirical science, ventures into the most interesting realms of behavioral biology to examine the intimate role of endocrinology in social relationships. The importance of hormones to reproductive behavior-from breeding cycles to male sexual display-is well known. What this book considers is the increasing evidence that hormones are just as important to social behavior. Peter Ellison and Peter Gray include the latest findings-both practical and theoretical-on the hormonal component of both casual interactions and fundamental bonds. The contributors, senior scholars and rising scientists whose work is shaping the field, go beyond the proximate mechanics of neuroendocrine physiology to integrate behavioral endocrinology with areas such as reproductive ecology and life history theory. Ranging broadly across taxa, from birds and rodents to primates, the volume pays particular attention to human endocrinology and social relationships, a focus largely missing from most works of behavioral endocrinology.

Ever since Darwin, science has enshrined competition as biology's brutal architect. But this revelatory new book argues that our narrow view of evolution has caused us to ignore the generosity and cooperation that exist around us, from the soil to the sky. In Sweet in Tooth and Claw, Kristin Ohlson explores the subtle ways in which nature is in constant collaboration to the betterment of all species. From the bear that discards the remainders of his salmon dinner on the forest ground, to the bright coral reefs of Cuba, she shows readers not only the connectivity lying beneath the surface in natural ecosystems, but why it's vital for humans to incorporate that understanding into our interactions with nature, and also with each other. Much of the damage that humans have done to our natural environment stems from our ignorance of these dense webs of connection. As we struggle to cope with the environmental hazards that our behaviour has unleashed, it's more important than ever to understand nature's billions of cooperative interactions. This way, we can stop disrupting them and instead rely on them to renew ecosystems. In reporting from the frontlines of scientific research, regenerative agriculture, and urban conservation, Ohlson shows that a shift from focusing on competition to collaboration can heal not only our relationships with the natural world, but also with each other.