Human Biology

In 2017, author Shanna Swan and her team of researchers completed a major study. They found that over the past four decades, sperm levels among men in Western countries have dropped by more than 50 percent. They came to this conclusion after examining 185 studies involving close to 45,000 healthy men. The result sent shockwaves around the globe - but the story didn’t end there.

You are just 10% human. For every one of the cells that make up the vessel that you call your body, there are nine impostor cells hitching a ride. You are not just flesh and blood, muscle and bone, brain and skin, but also bacteria and fungi. Over your lifetime, you will carry the equivalent weight of five African elephants in microbes. You are not an individual but a colony. Until recently, we had thought our microbes hardly mattered, but science is revealing a different story, one in which microbes run our bodies and becoming a healthy human is impossible without them.

Flush is both an urgent exploration of the world’s single most squandered natural resource, and a cri de coeur (or cri de colon?) for the vast, hidden value in our “waste.” Award-winning journalist and microbiologist Bryn Nelson, PhD, leads listeners through the colon and beyond with infectious enthusiasm, helping to usher in a necessary mental shift that could restore our balance with the rest of the planet and save us from ourselves.

Gluttony. Greed. Sloth. Pride. Envy. Lust. Anger. These are The Seven Deadly Sins, the vices of humankind that define immorality. But do these sins really represent moral failings, or are they simply important and useful biological functions that humans need to survive? Instead of being acts of immorality, are they really just a result of how our bodies, our psyches, and our brains in particular, are wired? In Seven Deadly Sins, Guy Leschziner, a professor of neurology, dares to turn much of what society thinks of as morality on its head and to ask these controversial questions.

There is a scientific revolution stirring in the field of human perception. Research has shown that the extraordinary sensory powers of our animal friends can help us better understand the same powers that lie dormant within us....

Ambika Kamath and Melina Packer reveal how scientists studying animal behavior have long projected human norms and values onto animals while seeking to understand them. When scientific studies conclude that these norms and values are natural in animals, it makes it easier to think of them as natural in humans too. And because scientists, historically and to this day, largely belong to elite, powerful segments of society, the norms and values embedded into animal behavior science match those of the already powerful.

An eye-opening look into why our bodies work - or don’t - the way they do. From blurry vision to crooked teeth, ACLs (anterior cruciate ligaments) that tear at alarming rates and spines that seem to spend a lifetime falling apart, it’s surprising that human beings have beaten the odds as a species. After all, we’re the only survivors on our branch of the tree of life. In this funny, wide-ranging and often surprising book, biologist Alex Bezzerides tells us from where we inherited our adaptable, achy, brilliant bodies in the process of evolution.

This classic work on the rules of sex - updated for a new generation - is still as provocative as the day it was published, providing simple explanations for any and all questions about what happens in the bedroom.

Explore each organ of the body in this immersive audiobook adaptation of Kay's Anatomy, read by world-wide multi-million bestselling author and former doctor Adam Kay with a full cast of voices, including Mark Gatiss, Sandi Toksvig, Andy Nyman and Lolly Adefope.

We’ve come a long way. The earliest human had a brain as small as a child’s fist; ours are four times bigger, with spectacular abilities and potential we are only just beginning to understand. This is How the Mind Changed, a seven-million-year journey through our own heads, packed with vivid stories, groundbreaking science, and thrilling surprises. Discover how memory has almost nothing to do with the past.

While Forbidden Gates includes fresh insights for traditional, tried and true methods of overcoming darkness, it also unveils for the first time how breakthrough advances in science, technology, and philosophy—including cybernetics, bio-engineering, nanotechnology, machine intelligence, synthetic biology, and transhumanism—will combine to create mind-boggling game-changes to everything you have ever known about spiritual warfare.

Our species has amassed unprecedented knowledge of nature, which we have tried to use to seize control of life and bend the planet to our will. In A Natural History of the Future, biologist Rob Dunn argues that such efforts are futile. We may see ourselves as life’s overlords, but we are instead at its mercy. In the evolution of antibiotic resistance, the power of natural selection to create biodiversity, and even the surprising life of the London Underground, Dunn finds laws of life that no human activity can annul.

Throughout history, even as daily life has exhibited calm and tolerance, war has never been far away, and even within societies, violence can be a threat. The Goodness Paradox gives a new and powerful argument for how and why this uncanny combination of peacefulness and violence crystallized after our ancestors acquired language in Africa a quarter of a million years ago.

Several years ago, ecologist Lauren E. Oakes set out from California for Alaska's old-growth forests to hunt for a dying tree: the yellow-cedar. With climate change as the culprit, the death of this species meant loss for many Alaskans. Oakes and her research team wanted to chronicle how plants and people could cope with their rapidly changing world. Amidst the standing dead, she discovered the resiliency of forgotten forests, flourishing again in the wake of destruction, and a diverse community of people who persevered to create new relationships with the emerging environment.

Early studies of the human brain used a simple method: Wait for misfortune to strike - strokes, seizures, infectious diseases, horrendous accidents - and see how victims coped. In many cases their survival was miraculous, if puzzling. Observers were amazed by the transformations that took place when different parts of the brain were destroyed, altering victims' personalities. With the lucid, masterful explanations and razor-sharp wit his fans have come to expect, Kean explores the brain's secret passageways.

We know much about our history from bones and DNA, but these studies do not tell us about the characteristics that are not preserved in the fossil record―the fleshy parts and behaviors. Looking Down the Tree applies evolutionary principles to understand the history of our species and the pressures of natural selection which led to our unique appearance and behaviors. Cruzan draws upon evidence from fossils, genomics, phylogenetics, coalescence theory.

Since the late 1980s the dominant theory of human origins has been that a "cognitive revolution" (c. 50,000 years ago) led to the advent of our species, Homo sapiens. As a result of this revolution our species spread and eventually replaced all existing archaic Homo species, ultimately leading to the superiority of modern humans. Or so we thought. As Clive Finlayson explains, the latest advances in genetics prove that there was significant interbreeding between modern humans and the Neanderthals.

How did humans come to be who we are? In his marvelous, eccentric, and widely lauded book Being a Beast, legal scholar, veterinary surgeon, and naturalist extraordinaire Charles Foster set out to understand the consciousness of animal species by living as a badger, otter, fox, deer, and swift. Now, he inhabits three crucial periods of human development to understand the consciousness of perhaps the strangest animal of all—the human being.

In this groundbreaking new book, researchers Andrew Newberg and Eugene d'Aquili offer an explanation that is at once profoundly simple and scientifically precise: The religious impulse is rooted in the biology of the brain. In Why God Won't Go Away, Newberg and d'Aquili document their pioneering explorations in the field of neurotheology, an emerging discipline dedicated to understanding the complex relationship between spirituality and the brain.

A giant of archaeology, Colin Renfrew has immeasurably improved our understanding of human history. In this passionately argued work, he offers a concise summary of prehistory - human existence that predates the development of written records - while challenging the very definition of prehistory itself.