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The Evolution of Imperfection: The Science of Why We Aren’t and Can’t Be Perfect
by Laurence D. HurstHow understanding our genetic imperfections can change our view of evolution and enrich what it means to be humanIf we start with the presumption that evolution is a constantly improving process, some aspects of our evolution just do not make sense. We have a high rate of genetic diseases, for example, and much of our DNA seems to be pointless. In The Evolution of Imperfection, Laurence Hurst explores our apparently rotten genetic luck.Hurst, a leading authority on evolution and genetics, argues that our evolutionary imperfections proceed directly from two features: the difficulties of pregnancy and the fact that historically there are relatively few of us. In pregnancy, natural selection can favor chromosomes that kill embryos in species (including ours) that continuously receive resources from the mother. Most fertilized eggs don&’t make it, and incompatibilities between the fetus and mother can lead to lethal disorders of pregnancy. The historically small population size enhances the role of chance, which in turn leads to both accumulation of unnecessary DNA and more mutation.So what can save us? One answer may lie in genetic medicine, which has given us therapies that make killer conditions preventable and even curable.Hurst suggests that our seeming imperfections could be the key to a new way to understand evolution itself. Looking at circumstances that seem to defy explanation, we might come to a richer understanding of how evolution really works, and what it means to be human.
The Evolution of Intelligent Systems: How Molecules Became Minds
by Ken RichardsonHow could something as seemingly transcendental as the human mind have arisen from far simpler material beginnings? This book provides a comprehensive overview of evolution from pre-life and early life forms through increasing complexity to advanced cognitive systems using a new framework based on dynamic systems theory.
The Evolution of International Security Studies
by Barry Buzan Lene HansenInternational Security Studies (ISS) has changed and diversified in many ways since 1945. This book provides the first intellectual history of the development of the subject in that period. It explains how ISS evolved from an initial concern with the strategic consequences of superpower rivalry and nuclear weapons, to its current diversity in which environmental, economic, human and other securities sit alongside military security, and in which approaches ranging from traditional Realist analysis to Feminism and Post-colonialism are in play. It sets out the driving forces that shaped debates in ISS, shows what makes ISS a single conversation across its diversity, and gives an authoritative account of debates on all the main topics within ISS. This is an unparalleled survey of the literature and institutions of ISS which will be an invaluable guide for all students and scholars of ISS, whether traditionalist, 'new agenda' or critical.
The Evolution of International Security Studies
by Barry Buzan Lene HansenProspect Theory: For Risk and Ambiguity provides the first comprehensive and accessible textbook treatment of the way decisions are made both when we have the statistical probabilities associated with uncertain future events (risk) and when we lack them (ambiguity). The book presents models, primarily prospect theory, that are both tractable and psychologically realistic. A method of presentation is chosen that makes the empirical meaning of each theoretical model completely transparent. Prospect theory has many applications in a wide variety of disciplines. The material in the book has been carefully organized to allow readers to select pathways through the book relevant to their own interests. With numerous exercises and worked examples, the book is ideally suited to the needs of students taking courses in decision theory in economics, mathematics, finance, psychology, management science, health, computer science, Bayesian statistics, and engineering.
The Evolution of Knowledge: Rethinking Science for the Anthropocene
by Jürgen RennA fundamentally new approach to the history of science and technologyThis book presents a new way of thinking about the history of science and technology, one that offers a grand narrative of human history in which knowledge serves as a critical factor of cultural evolution. Jürgen Renn examines the role of knowledge in global transformations going back to the dawn of civilization while providing vital perspectives on the complex challenges confronting us today in the Anthropocene—this new geological epoch shaped by humankind.Renn reframes the history of science and technology within a much broader history of knowledge, analyzing key episodes such as the evolution of writing, the emergence of science in the ancient world, the Scientific Revolution of early modernity, the globalization of knowledge, industrialization, and the profound transformations wrought by modern science. He investigates the evolution of knowledge using an array of disciplines and methods, from cognitive science and experimental psychology to earth science and evolutionary biology. The result is an entirely new framework for understanding structural changes in systems of knowledge—and a bold new approach to the history and philosophy of science.Written by one of today's preeminent historians of science, The Evolution of Knowledge features discussions of historiographical themes, a glossary of key terms, and practical insights on global issues ranging from climate change to digital capitalism. This incisive book also serves as an invaluable introduction to the history of knowledge.
The Evolution of Knowledge: Scientific Theories for a Sustainable Society (Science for Sustainable Societies)
by Rajendra K. BeraThis book emphasizes the rising need for people to have a basic understanding of science and technology and the emphatic role they can play in shaping the AI-driven future, especially in terms of creating sustainable societies with growing job opportunities. This book highlights why a smoothly functioning society will require, but does not yet possess in critical numbers, policymakers, senior managers, government officials, and those entering the high-end of the AI-driven job market who have a shared vision and a shared understanding of how science shapes the future of sustainable societies.This book makes the case that the destiny of Homo sapiens is not just about evolutionary biology but increasingly about evolutionary knowledge. This book describes the web of knowledge where scientific theories appear as intellectual constructs, which lead to new knowledge that open opportunities for gainful human employment for the well-educated while eliminating jobsfor the less-educated by advancing AI in a predator–prey adversarial model (the logistic map), thus raising livelihood concerns across wide swathes of human population.This inevitably leads to the question, “How should intellectual property rights, especially patents, be granted and protected when AI becomes advanced enough to invent without human intervention?” To answer this question, lawmakers, policymakers, managers, government officials, judiciary, enforcement agencies, etc., must have sufficient knowledge of how scientific theories impact modern society. After reading this book, the reader will be able to find answers to the following questions:• How do scientific theories impact modern society?• What is the intellectual base on which science and technology policies are founded?• Why do individuals across a population need to possess scientific knowledge?• What are the rising concerns of peoplein finding sustainable employment in an AI-driven world?• What is the compelling need to understand the role of patentable inventions in a world where intellectual property is wealth?
The Evolution of Mammalian Sociality in an Ecological Perspective
by Clara B. JonesThis brief discusses factors associated with group formation, group maintenance, group population structure, and other events and processes (e. g. , physiology, behavior) related to mammalian social evolution. Within- and between-lineages, features of prehistoric and extant social mammals, patterns and linkages are discussed as components of a possible social "tool-kit". "Top-down" (predators to nutrients), as well as "bottom-up" (nutrients to predators) effects are assessed. The present synthesis also emphasizes outcomes of Hebbian (synaptic) decisions on Malthusian parameters (growth rates of populations) and their consequences for (shifting) mean fitnesses of populations. Ecology and evolution (EcoEvo) are connected via the organism's "norms of reaction" (genotype x environment interactions; life-history tradeoffs of reproduction, survival, and growth) exposed to selection, with the success of genotypes influenced by intensities of selection as well as neutral (e. g. mutation rates) and stochastic effects. At every turn, life history trajectories are assumed to arise from "decisions" made by types responding to competition for limiting resources constrained by Hamilton's rule (inclusive fitness operations).
The Evolution of Mathematics: A Rhetorical Approach (RSA Series in Transdisciplinary Rhetoric)
by G. Mitchell ReyesThere is a growing awareness among researchers in the humanities and social sciences of the rhetorical force of mathematical discourse—whether in regard to gerrymandering, facial recognition technologies, or racial biases in algorithmic automation. This book proposes a novel way to engage with and understand mathematics via a theoretical framework that highlights how math transforms the social-material world.In this study, G. Mitchell Reyes applies contemporary rhetorical analysis to mathematical discourse, calling into question the commonly held view that math equals truth. Examining mathematics in historical context, Reyes traces its development from Plato’s teaching about abstract numbers to Euclidian geometry and the emergence of calculus and infinitesimals, imaginary numbers, and algorithms. This history reveals that mathematical innovation has always relied on rhetorical practices of making meaning, such as analogy, metaphor, and invention. Far from expressing truth hidden deep in reality, mathematics is dynamic and evolving, shaping reality and our experience of it.By bringing mathematics back down to the material-social world, Reyes makes it possible for scholars of the rhetoric and sociology of science, technology, and math to collaborate with mathematicians themselves in order to better understand our material world and public culture.
The Evolution of Multicellularity (Evolutionary Cell Biology)
by Matthew D. HerronAmong the most important innovations in the history of life is the transition from single-celled organisms to more complex, multicellular organisms. Multicellularity has evolved repeatedly across the tree of life, resulting in the evolution of new kinds of organisms that collectively constitute a significant portion of Earth’s biodiversity and have transformed the biosphere. This volume examines the origins and subsequent evolution of multicellularity, reviewing the types of multicellular groups that exist, their evolutionary relationships, the processes that led to their evolution, and the conceptual frameworks in which their evolution is understood. This important volume is intended to serve as a jumping-off point, stimulating further research by summarizing the topics that students and researchers of the evolution of multicellularity should be familiar with, and highlighting future research directions for the field.
The Evolution of Obesity
by Jay Schulkin Michael L. PowerIn this sweeping exploration of the relatively recent obesity epidemic, Michael L. Power and Jay Schulkin probe evolutionary biology, history, physiology, and medical science to uncover the causes of our growing girth. The unexpected answer? Our own evolutionary success.For most of the past few million years, our evolutionary ancestors' survival depended on being able to consume as much as possible when food was available and to store the excess energy for periods when it was scarce. In the developed world today, high-calorie foods are readily obtainable, yet the propensity to store fat is part of our species' heritage, leaving an increasing number of the world's people vulnerable to obesity. In an environment of abundant food, we are anatomically, physiologically, metabolically, and behaviorally programmed in a way that makes it difficult for us to avoid gaining weight.Power and Schulkin’s engagingly argued book draws on popular examples and sound science to explain our expanding waistlines and to discuss the consequences of being overweight for different demographic groups. They review the various studies of human and animal fat use and storage, including those that examine fat deposition and metabolism in men and women; chronicle cultural differences in food procurement, preparation, and consumption; and consider the influence of sedentary occupations and lifestyles.A compelling and comprehensive examination of the causes and consequences of the obesity epidemic, The Evolution of Obesity offers fascinating insights into the question, Why are we getting fatter?
The Evolution of Phylogenetic Systematics
by Andrew HamiltonThe Evolution of Phylogenetic Systematics aims to make sense of the rise of phylogenetic systematics--its methods, its objects of study, and its theoretical foundations--with contributions from historians, philosophers, and biologists. This volume articulates an intellectual agenda for the study of systematics and taxonomy in a way that connects classification with larger historical themes in the biological sciences, including morphology, experimental and observational approaches, evolution, biogeography, debates over form and function, character transformation, development, and biodiversity. It aims to provide frameworks for answering the question: how did systematics become phylogenetic?
The Evolution of Physics: From Early Concepts to Relativity and Quanta
by Albert Einstein Leopold InfeldClear and concise explanations of the development of theories explaining physical phenomena. They begin with basic mechanics and work their way through field physics, special and general relativity and then finally to quantum mechanics. All of this is done without mathematic equations. It is all explained through analogies, theories and explanation or real world experiments.
The Evolution of Policing: Worldwide Innovations and Insights (International Police Executive Symposium Co-Publications)
by Dilip K. Das Aiedeo Mintie Das Melchor C. de GuzmanDrawn from recent proceedings of the International Police Executive Symposium (IPES), this volume explores major policing initiatives and evolutions across the globe and presents practical insights on how police are retooling their profession. The book discusses the trends in evolving police roles among democratic and democratizing states, the impact of community-oriented policing, innovations occurring in police training and management, and issues relating to ethics, technology, investigations, and handling public relations. The book also examines challenges to police practices, such as terrorism, decentralization, and the policing of indigenous and special population groups.
The Evolution of Power: A New Understanding of the History of Life
by Geerat VermeijA sweeping new account of the role of power in the evolution of all life on EarthPower has many dimensions, from individual attributes such as strength and speed to the collective advantages of groups. The Evolution of Power takes readers on a breathtaking journey across history and the natural world, revealing how the concept of power unifies a vast range of phenomena in the evolution of life—and how natural selection has placed humanity and the planet itself on a trajectory of ever-increasing power.Drawing on evidence from fossils, living organisms, and contemporary society, Geerat Vermeij documents increases in power at all scales, from body size, locomotor performance, and the use of force in competition to efficiency in production and consumption within ecosystems. He shows how power—which he defines as the rate at which organisms acquire and apply energy—is tied to the emergence of cooperation, and how the modern economy, which for the first time has established a monopoly over the biosphere by a single species, is a continuation of evolutionary trends stretching back to the dawn of life. Vermeij persuasively argues that we can find solutions to the many problems arising from this extreme concentration of power by broadening our exclusively human-centered perspective.A masterful work by one of today’s most innovative and forward-thinking naturalists, The Evolution of Power offers a new understanding of our place in the grand sweep of evolutionary history.
The Evolution of Religion, Religiosity and Theology: A Multi-Level and Multi-Disciplinary Approach (Routledge New Critical Thinking in Religion, Theology and Biblical Studies)
by Lluis Oviedo Jay R. FeiermanThis book takes a multi-dimensional and multi-disciplinary approach to religion, religiosity and theology from their earliest beginnings to the present day. It uniquely brings together the natural sciences and theology to explore how religious practice emerged and developed through the four sections into which the book is organized: Evolutionary biology; Philosophical linguistics, psychology and neuroscience; Theology and Anthropology. The volume features an international panel of contributors who develop an innovative picture of religion as a culturally-created social institution; religiosity as a more personal and subjective anthropological element of people expressed through religion; and theology as the study of god. To survive in changing times, living systems — a good characterization of religion, religiosity and theology — all must adaptively evolve. This is a vital study of a rapidly burgeoning field. As such, it will be of great interest to scholars in religious studies and theology as well as in the psychological, sociological, and anthropological study of religion.
The Evolution of Religions: A History of Related Traditions
by Lance GrandeThousands of religions have adherents today, and countless more have existed throughout history. What accounts for this astonishing diversity?This extraordinarily ambitious and comprehensive book demonstrates how evolutionary systematics and philosophy can yield new insight into the development of organized religion. Lance Grande—a leading evolutionary systematist—examines the growth and diversification of hundreds of religions over time, highlighting their historical interrelationships. Combining evolutionary theory with a wealth of cultural records, he explores the formation, extinction, and diversification of different world religions, including the many branches of Asian cyclicism, polytheism, and monotheism.Grande deploys an illuminating graphic system of evolutionary trees to illustrate historical interrelationships among the world’s major religious traditions, rejecting colonialist and hierarchical “ladder of progress” views of evolution. Extensive and informative illustrations clearly and vividly indicate complex historical developments and help readers grasp the breadth of interconnections across eras and cultures.The Evolution of Religions marshals compelling evidence, starting far back in time, that all major belief systems are related, despite the many conflicts that have taken place among them. By emphasizing these broad historical interconnections, this book promotes the need for greater tolerance and deeper, unbiased understanding of cultural diversity. Such traits may be necessary for the future survival of humanity.
The Evolution of Sexuality
by Todd K. Shackelford Ranald D. HansenAttraction, mating, reproduction: it is a given that as a species, human beings are concerned with sex. And whether the study compares sexual behaviors of men and women or considers the proportions between nature and nurture, most roads lead back to our distant ancestors and/or our fellow animals. The Evolution of Sexuality collects stimulating new empirical findings and theoretical concepts regarding both familiar themes and emerging areas of interest. Following earlier titles in this series, an interdisciplinary panel of contributors examines topics specific to the whys of male and female sex-related behavior, here ranging from biological bases for male same-sex attraction to the seemingly elusive purpose of the female orgasm. This vantage point between biology and psychology gives readers profound insights not just into human differences and similarities, but also why they continue to matter despite our vast understanding of culture and socialization. And intriguing dispatches from the humanities review sexual themes in classic works of literature and explore the role of parent-offspring conflict in the English Revolution of the seventeenth century. Among the topics covered: Sexual conflict and evolutionary psychology: toward a unified framework. Assortative mating, caste, and class. The functional design and phylogeny of female sexuality. Is oral sex a form of mate retention behavior? Two behavioral hypotheses for the evolution or male homosexuality in humans. Sperm competition and the evolution of human sexuality. The Evolution of Sexuality will attract evolutionary scientists across a variety of disciplines. Faculty, graduate and undergraduate students, and researchers interested in sexuality will find it a springboard for discussion, debate, and further study.
The Evolution of Social Communication in Primates
by Marco Pina Nathalie GontierHow did social communication evolve in primates? In this volume, primatologists, linguists, anthropologists, cognitive scientists and philosophers of science systematically analyze how their specific disciplines demarcate the research questions and methodologies involved in the study of the evolutionary origins of social communication in primates in general and in humans in particular. In the first part of the book, historians and philosophers of science address how the epistemological frameworks associated with primate communication and language evolution studies have changed over time and how these conceptual changes affect our current studies on the subject matter. In the second part, scholars provide cutting-edge insights into the various means through which primates communicate socially in both natural and experimental settings. They examine the behavioral building blocks by which primates communicate and they analyze what the cognitive requirements are for displaying communicative acts. Chapters highlight cross-fostering and language experiments with primates, primate mother-infant communication, the display of emotions and expressions, manual gestures and vocal signals, joint attention, intentionality and theory of mind. The primary focus of the third part is on how these various types of communicative behavior possibly evolved and how they can be understood as evolutionary precursors to human language. Leading scholars analyze how both manual and vocal gestures gave way to mimetic and imitational protolanguage and how the latter possibly transitioned into human language. In the final part, we turn to the hominin lineage, and anthropologists, archeologists and linguists investigate what the necessary neurocognitive, anatomical and behavioral features are in order for human language to evolve and how language differs from other forms of primate communication.
The Evolution of Society: An Information-Processing Perspective
by Erik W. AslaksenThis book covers the work of Erik W. Aslaksen who continues to develop the view of society and its evolution published in earlier work – The Social Bond (Springer 2018), The Stability of Society (Springer 2020), and Measures of Social Evolution (Springer 2021), bringing together core material of that work with the results of recent investigations in order to present the evolution of society as an integrated and continuous story leading right up to the present time. A story of human action driven by our beliefs, desires, and an ideology arising out of our ability to transform and exploit our environment through the development and application of technology. The distinguishing feature of the work is the treatment of society as an information-processing system and applying the system methodology for handling complexity, as it is applied, e.g., in engineering. This focus on information is particularly pertinent in the current circumstances, where the world has arrived at a critical point in its history through the conjunction of a number of issues that appear to be spiralling out of control: Global warming and the associated climate change, the destruction of our environment through such processes as land clearing and industrialisation with associated loss of biodiversity, the rapidly increasing visibility of the inequality in the quality of life with associated tensions, and above all, the determination of the US-led Western alliance to cling to its hegemonial role, apparently at all cost. With the sophistication and proliferation of nuclear weapons, the latter has the potential to bring on the end of civilisation as we know it. The resolution of any of these issues depends on the information available to all parties involved, and hence, the availability and quality of information is seen as the crucial and overarching issue of the present time. A number of aspects of this issue, including the role of education, economic inequality, and the control of the media, are treated in some detail, and proposals for some small steps in the right direction are put forward.
The Evolution of Techniques: Rigidity and Flexibility in Use, Transmission, and Innovation (Vienna Series in Theoretical Biology)
by Mathieu CharbonneauA novel, interdisciplinary exploration of the relative contributions of rigidity and flexibility in the adoption, maintenance, and evolution of technical traditions.Techniques can either be used in rigid, stereotypical ways or in flexibly adaptive ways, or in some combination of the two. The Evolution of Techniques, edited by Mathieu Charbonneau, addresses the impacts of both flexibility and rigidity on how techniques are used, transformed, and reconstructed, at varying social and temporal scales. The multidisciplinary contributors demonstrate the important role of the varied learning contexts and social configurations involved in the transmission, use, and evolution of techniques. They explore the diversity of cognitive, behavioral, sociocultural, and ecological mechanisms that promote and constrain technical flexibility and rigidity, proposing a deeper picture of the enablers of, and obstacles to, technical transmission and change.In line with the extended evolutionary synthesis, the book proposes a more inclusive and materially grounded conception of technical evolution in terms of promiscuous, dynamic, and multidirectional causal processes. Offering new evidence and novel theoretical perspectives, the contributors deploy a diversity of methods, including ethnographies, field and laboratory experiments, cladistics and phylogenetic tree building, historiography, and philosophical analysis. Examples of the wide range of topics covered include field experiments with potters from five cultures, stability and change in Paleolithic toolmaking, why children lack flexibility when making tools, and cultural techniques in nonhuman animals.The volume&’s three thematic sections are:· Timescales of technical rigidity and flexibility· Rigid copying to flexible reconstruction· Exogenous factors of technical rigidity and flexibilityThe volume closes with a discussion by philosopher Kim Sterelny.ContributorsRita Astuti, Adam Howell Boyette, Blandine Bril, Josep Call, Mathieu Charbonneau, Arianna Curioni, Nicola Cutting, Bert De Munck, György Gergely, Anne-Lise Goujon, Ildikó Király, Catherine Lara, Sébastien Manem, Luke McEllin, Helena Miton, Giulio Ongaro, Sarah Pope-Caldwell, Valentine Roux, Manon Schweinfurth, Dan Sperber, Kim Sterelny, Dietrich Stout, James W. A. Strachan, Sadie Tenpas
The Evolution of Useful Things: How Everyday Artifacts--From Forks and Pins to Paper Clips and Zippers--Came to Be as They Are
by Henry PetroskiHow did the table fork acquire a fourth tine? What advantage does the Phillips-head screw have over its single-grooved predecessor? Why does the paper clip look the way it does? What makes Scotch tape Scotch? In this delightful book Henry, Petroski takes a microscopic look at artifacts that most of us count on but rarely contemplate, including such icons of the everyday as pins, Post-its, and fast-food "clamshell" containers. At the same time, he offers a convincing new theory of technological innovation as a response to the perceived failures of existing products--suggesting that irritation, and not necessity, is the mother of invention.From the Trade Paperback edition.
The Evolution of the Chilean-Argentinean Andes (Springer Earth System Sciences Ser.)
by Andrés Folguera Maximiliano Naipauer Laura Giambiagi Eduardo Contreras-Reyes Nemesio Heredia Alfonso Encinas Sofía B. Iannelli Verónica Oliveros Federico M. Dávila Gilda Collo Andrei Maksymowicz María Paula Iglesia Llanos Martín Turienzo Darío Orts Vanesa D. Litvak Orlando Alvarez César ArriagadaThis book describes the Mesozoic to Cenozoic evolution of the Chilean and Argentinean Andes. The book is structured from a historical perspective concentrating on specific processes explained in each chapter. The chapters cover dynamic subsidence; neotectonics; magmatism; long and short term deformation; spatial development of ancient orogenic processes that control Andean reactivations; relation between ocean bathymetry and deformation. Sources of detritus through Andean construction are discussed by specialists from both sides of the Southern Andes. This book provides up-to-date reviews, maps, evolutionary schemes and extensive reference lists useful for geoscientists and students in Earth Science fields.
The Evolution of the Human Head
by Daniel E. LiebermanIn one sense, human heads function much like those of other mammals. We use them to chew, smell, swallow, think, hear, and so on. But, in other respects, the human head is quite unusual. Unlike other animals, even our great ape cousins, our heads are short and wide, very big brained, snoutless, largely furless, and perched on a short, nearly vertical neck. Daniel E. Lieberman sets out to explain how the human head works, and why our heads evolved in this peculiarly human way. Exhaustively researched and years in the making, this innovative book documents how the many components of the head function, how they evolved since we diverged from the apes, and how they interact in diverse ways both functionally and developmentally, causing them to be highly integrated. This integration not only permits the head’s many units to accommodate each other as they grow and work, but also facilitates evolutionary change. Lieberman shows how, when, and why the major transformations evident in the evolution of the human head occurred. The special way the head is integrated, Lieberman argues, made it possible for a few developmental shifts to have had widespread effects on craniofacial growth, yet still permit the head to function exquisitely. This is the first book to explore in depth what happened in human evolution by integrating principles of development and functional morphology with the hominin fossil record. The Evolution of the Human Head will permanently change the study of human evolution and has widespread ramifications for thinking about other branches of evolutionary biology.
The Evolution of the Human Placenta
by Jay Schulkin Michael L. PowerPower and Schulkin reveal the amazing evolution of the human placenta—and in so doing show how each of our lives began.As the active interface of the most biologically intimate connection between two living organisms, a mother and her fetus, the placenta is crucial to human evolution and survival. Michael L. Power and Jay Schulkin explore the more than 100 million years of evolution that led to the human placenta and, in so doing, they help unravel the mysteries of human life's first moments.Starting with some of the earliest events that have influenced the path of placental evolution in mammals and progressing to the specifics of the human placenta, this book examines modern gestation within an evolutionary framework. Human beings are a successful species and our numbers have increased dramatically since our earliest days on Earth. However, human fetal development is fraught with poor outcomes for both the mother and fetus that appear to be, if not unique, far more common in humans than in other mammals. High rates of early pregnancy loss, nausea and vomiting during pregnancy, preeclampsia and related maternal hypertension, and preterm birth are rare or absent in other mammals yet not unusual in humans. Power and Schulkin explain why this apparent contradiction exists and address such topics as how the placenta regulates and coordinates the metabolism, growth, and development of both mother and fetus, the placenta’s role in protecting a fetus from the mother’s immune system, and placental diseases. In the process, they reveal the vital importance of this organ—which is composed mostly of fetal cells—for us as individuals and as a species.