Since Darwin's day, we've been told that sexual monogamy comes naturally to our species. But this narrative is collapsing. Here, renegade thinkers Christopher Ryan and Cacilda Jethá, while debunking almost everything we "know" about sex, offer a bold alternative explanation. Ryan and Jethá's central contention is that human beings evolved in egalitarian groups that shared food, child care, and, often, sexual partners. Weaving together convergent,...

What can explain the incredible diversity of beauty in nature? Richard O. Prum, an award-winning ornithologist, discusses Charles Darwin's second and long-neglected theory--aesthetic mate choice--and what it means for our understanding of evolution. In addition, Prum connects those same evolutionary dynamics to the origins and diversity of human sexuality, offering riveting new thinking about the evolution of human beauty and the role of mate choice,...

"The author of the best-selling Your Inner Fish, now gives us a lively and accessible account of the great transformations in the history of life, that enable us to further understand whether our presence on this planet is an accident or inevitable. The great transformations in the history of life brought about whole scale shifts in how animals live and how their bodies are organized: the evolution of fish to land-living creature, the origin of birds,...

Imagine a world without bees, butterflies, and flowering plants. That was Earth 125 million years ago. Turn back the clock 400 million years, and there were no trees. At 450 million years in the past, even the earliest insects had not yet developed. And looking back 500 million years, the land was devoid of life, which at that time flourished in a profusion of strange forms in the oceans. These and other major turning points are the amazing story...

"In this provocative, wide-ranging book, Richard Manning offers a dramatically revisionist view of recent human evolution, beginning with the vast increase in brain size that set us apart from our primate relatives and brought an accompanying increase in our need for nourishment. For 290,000 years, we managed to meet that need as hunter-gatherers, a state in which Manning believes we were at our most human: at our smartest, strongest, most sensually...

"Dip below the ocean's surface and you are soon confronted by forms of life that could not seem more foreign to our own: sea sponges, soft corals, and serpulid worms, whose rooted bodies, intricate geometry, and flower-like appendages are more reminiscent of plant life or even architecture than anything recognizably animal. Yet these creatures are our cousins. As fellow members of the animal kingdom--the Metazoa--they can teach us much about the evolutionary...

From the emergence of life, to Leewenhoek's microscopic world, to GMO crops, The Biology Book presents 250 landmarks in the most widely studied scientific field. Brief, engaging, and colorfully illustrated synopses introduce readers to every major subdiscipline, including cell theory, genetics, evolution, physiology, thermodynamics, molecular biology, and ecology. With information on such varied topics as paleontology, pheromones, nature vs. nurture,...

This book investigates the social history of skin color from prehistory to the present, showing how our body's most visible trait influences our social interactions in profound and complex ways. The author begins with the biology and evolution of skin pigmentation, explaining how skin color changed as humans moved around the globe. She explores the relationship between melanin pigment and sunlight, and examines the consequences of rapid migrations,...