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.

Can the structures that animals build--from the humble burrows of earthworms to towering termite mounds to the Great Barrier Reef--be said to live? However counterintuitive the idea might first seem, physiological ecologist Scott Turner demonstrates in this book that many animals construct and use structures to harness and control the flow of energy from their environment to their own advantage. Building on Richard Dawkins's classic, The Extended Phenotype, Turner shows why drawing the boundary of an organism's physiology at the skin of the animal is arbitrary. Since the structures animals build undoubtedly do physiological work, capturing and channeling chemical and physical energy, Turner argues that such structures are more properly regarded not as frozen behaviors but as external organs of physiology and even extensions of the animal's phenotype. By challenging dearly held assumptions, a fascinating new view of the living world is opened to us, with implications for our understanding of physiology, the environment, and the remarkable structures animals build.

Trundling along in essentially the same form for some 220 million years, turtles have seen dinosaurs come and go, mammals emerge, and humankind expand its dominion. Is it any wonder the persistent reptile bested the hare? In this engaging book physiologist Donald Jackson shares a lifetime of observation of this curious creature, allowing us a look under the shell of an animal at once so familiar and so strange.

Here we discover how the turtle’s proverbial slowness helps it survive a long, cold winter under ice. How the shell not only serves as a protective home but also influences such essential functions as buoyancy control, breathing, and surviving remarkably long periods without oxygen, and how many other physiological features help define this unique animal. Jackson offers insight into what exactly it’s like to live inside a shell—to carry the heavy carapace on land and in water, to breathe without an expandable ribcage, to have sex with all that body armor intervening.

Along the way we also learn something about the process of scientific discovery—how the answer to one question leads to new questions, how a chance observation can change the direction of study, and above all how new research always builds on the previous work of others. A clear and informative exposition of physiological concepts using the turtle as a model organism, the book is as interesting for what it tells us about scientific investigation as it is for its deep and detailed understanding of how the enduring turtle “works.”

Why are the eggs of the marsh wren deep brown, the winter wren's nearly white, and the gray catbird's a brilliant blue? And what in the DNA of a penduline tit makes the male weave a domed nest of fibers and the female line it with feathers, while the bird-of-paradise male builds no nest at all, and his bower-bird counterpart constructs an elaborate dwelling?

These are typical questions that Bernd Heinrich pursues in the engaging style we've come to expect from him—supplemented here with his own stunning photographs and original watercolors. One of the world's great naturalists and nature writers, Heinrich shows us how the sensual beauty of birds can open our eyes to a hidden evolutionary process. Nesting, as Heinrich explores it here, encompasses what fascinates us most about birds—from their delightful songs and spectacular displays to their varied eggs and colorful plumage; from their sex roles and mating rituals to nest parasitism, infanticide, and predation.

What moves birds to mate and parent their young in so many different ways is what interests Heinrich—and his insights into the nesting behavior of birds has more than a little to say about our own.

An award-winning biologist and writer applies queer feminist theory to developmental genetics, arguing that individuals are not essentially male or female.  
 
The idea that gender is a performance—a tenet of queer feminist theory since the nineties—has spread from college classrooms to popular culture. This transformative concept has sparked reappraisals of social expectations as well as debate over not just gender, but sex: what it is, what it means, and how we know it. Most scientific and biomedical research over the past seventy years has assumed and reinforced a binary concept of biological sex, though some scientists point out that male and female are just two outcomes in a world rich in sexual diversity.   
 
In Performance All the Way Down, MacArthur Fellow and Pulitzer Prize finalist Richard O. Prum brings feminist thought into conversation with biology, arguing that the sexual binary is not essential to human genes, chromosomes, or embryos. Our genomes are not blueprints, algorithms, or recipes for the physical representation of our individual sexual essences or fates. In accessible language, Prum shows that when we look closely at the science, we see that gene expression is a material action in the world, a performance through which the individual regulates and achieves its own becoming. A fertilized zygote matures into an organism with tissues and organs, neurological control, immune defenses, psychological mechanisms, and gender and sexual behavior through a performative continuum. This complex hierarchy of self-enactment reflects the evolved agency of individual genes, molecules, cells, and tissues.
 
Rejecting the notion of an intractable divide between the humanities and the sciences, Prum proves that the contributions of queer and feminist theorists can help scientists understand the human body in new ways, yielding key insights into genetics, developmental biology, physiology. Sure to inspire discussion, Performance All the Way Down is a book about biology for feminists, a book about feminist theory for biologists, and a book for anyone curious about how our sexual bodies grow.

Most people, when they contemplate the living world, conclude that it is a designed place. So it is jarring when biologists come along and say this is all wrong. What most people see as design, they say--purposeful, directed, even intelligent--is only an illusion, something cooked up in a mind that is eager to see purpose where none exists. In these days of increasingly assertive challenges to Darwinism, the question becomes acute: is our perception of design simply a mental figment, or is there something deeper at work?

Physiologist Scott Turner argues eloquently and convincingly that the apparent design we see in the living world only makes sense when we add to Darwin's towering achievement the dimension that much modern molecular biology has left on the gene-splicing floor: the dynamic interaction between living organisms and their environment. Only when we add environmental physiology to natural selection can we begin to understand the beautiful fit between the form life takes and how life works.

In The Tinkerer's Accomplice, Scott Turner takes up the question of design as a very real problem in biology; his solution poses challenges to all sides in this critical debate.