Evolution

Permanent body modification is a unique and variable practice among humans, not observed in other mammals. Despite being costly and risky, it is regularly performed. Scientific understanding of this phenomenon is nascent, prompting a symposium aiming to assess current research status and prioritize questions for the next decade. The event brings together academics and industry practitioners, explo...

In the literature on lip plates in Southern Ethiopia there has been a strong emphasis on their socio-cultural importance and little information about their biocultural significance. Shauna LaTosky proposes that cultural keystone species theory and cultural keystone place theory could provide a useful frameworks for understanding relationships between the agro-pastoralist Mursi of Southern Ethiopia...

Across continents, material evidence of body piercing jewelry abounds in the archeological record. However, the varying procedures and processes of piercing, healing, and stretching these wounds for adornment remains unfamiliar to most archeologists. This talk discusses the early self-experimentations that led to the development of the Euro-American body piercing industry. From the late 19th throu...

Archaeological research in Mexico and Central America reveals insights into cultural practices, focusing on the history of body modification. Examining long-term patterns helps unravel motivations for adoption, change, and abandonment of these practices. The talk emphasizes how body modification histories in this region illuminate shared identities across linguistic, ethnic, and political boundari...

This talk offers an overview of the many forms of permanent genital modifications embedded in human cultures, where they occur, the reasons why, the archaeological investigations of origins, and future trends. Included are female clitoridectomy, excision, infibulation, and other practices that affect about five percent of females worldwide; and the male practices that affect one-third of males: ci...

Bioarchaeological studies of Pleistocene populations, examining practices like tooth ablation, facial piercing, and cranial modification, contribute to our understanding of social identities and population dynamics. Recent analyses of Ohalo II H2 in southwestern Asia and Oldupai Hominid 1 in Tanzania reveal dental evidence of intentional body modifications. Ohalo II H2 likely represents the earlie...

Today, permanent body modification (PBM) is very popular. Studies suggest that well over a billion living people have experienced one or more types of PBM. But what is the history of PBM? When did the different types originate? Were they invented recently, or do they have a long history? Did they appear simultaneously or at different times? This presentation examines evidence in non-human animals...

Our ability to adapt our bodies to culture has ancient origins. We suggest a timeline for how the culturalization of the human body evolved, starting around 500-300 thousand years ago. This timeline highlights key moments at 140 thousand years, 70 thousand years, and 45 thousand years, followed by a faster pace linked to the rise of production economies. The underlying idea is a gradual growth in...

Permanent body modification is a unique and variable practice among humans, not observed in other mammals. Despite being costly and risky, it is regularly performed. Scientific understanding of this phenomenon is nascent, prompting a symposium aiming to assess current research status and prioritize questions for the next decade. The event brings together academics and industry practitioners, explo...

This talk presents a new account of the development of professional tattooing in Britain and America since the late 19th century. Research based exclusively in primary sources reveals that the story of what kickstarted the creation of commercial tattooing, and what sustained it, ultimately becomes intelligible as a small and interconnected network of transnational artists and – crucially – clients...

This talk explores the 1000-year practice of "footbinding" in ethnically Han Chinese families, involving modifying young girls' feet by wrapping the toes under the sole, often resulting in broken toes. Two main hypotheses—Labor Market and Evolutionary Social Sciences—are considered for explaining the origins, maintenance, and cessation of footbinding. This talk presents evidence from autopsy resul...

Comparative Anthropogeny (CompAnth) is the study of distinctly human traits and characteristics in the context of comparisons with our closest living relatives, the “great apes.” This symposium, the third of CARTA's CompAnth series, will present a collection of distinctive human traits, ranging from molecular, cellular, and anatomical biology to behavioral, societal, and cultural features. Given t...

Comparative Anthropogeny (CompAnth) is the study of distinctly human traits and characteristics in the context of comparisons with our closest living relatives, the “great apes.” This symposium, the third of CARTA's CompAnth series, will present a collection of distinctive human traits, ranging from molecular, cellular, and anatomical biology to behavioral, societal, and cultural features. Given t...

Human language is a strong contender for the title of most often named species-specific feature in the literature. But why is that? In this talk, Eva Wittenberg explores what we could mean by "human language", and how different conceptions of language inevitably lead to different answers about whether it is species-specific. While syntax is a central feature, it is only one of several, and the uni...

Human ovulation lacks visible signs, unlike chimpanzees and bonobos with conspicuous genital swellings during fertility. This led to the concept of "concealed ovulation," seen as a human adaptation. Proposed reasons include encouraging paternal investment, confusing paternity to deter infanticide, enabling secret mating and female choice, and reducing female rivalry. Many non-human primates also h...

Life history theory suggests that inter-birth intervals (IBIs) depend on a trade-off between maternal investment in current and future offspring, influenced by the mother's energy and somatic maintenance. Normally, IBI aligns with maternal and infant body size, larger relative infant size leading to slower breeding. In contrast, humans have relatively shorter IBIs due to cooperative breeding, supp...

High-altitude adaptation stands out as one of the most notable examples of evolution within our species. Despite similar challenges of decreased oxygen availability, human groups on different continents have followed unique evolutionary trajectories. I will discuss how genomic, molecular, and physiological discoveries reveal key insights into human-specific evolutionary changes, examine comparativ...

The human genome contains segments of DNA with non-human origins. This introgressed genetic material is remnants of mating events between early modern humans and their archaic contemporaries (e.g., Neanderthals and Denisovans). In this talk, Andrew Schork will review the evidence for such genetic material, its consequences on phenotypic diversity in modern humans, and discuss if this process - arc...

The most complex organizations in the living world beside those of humans are the colonies of ants. Mark Moffett will argue that points of comparison between sharply different organisms like ants and humans are exceptionally valuable to science, and indeed that modern humans are in many ways much more like certain ants than we are to our nearest relatives, the chimpanzees. He considers such issues...

Ethnology, also known as cross-cultural analysis or comparative anthropology, involves comparing features of historically documented human societies. It has historical ties to archaeology, with notable figures like Augustus Pitt Rivers and Lewis Binford being proponents. Despite this, it's not commonly seen as a vital archaeological tool. This talk argues for its importance, citing both theoretica...

Since humans split from their primate ancestors, their brains evolved with a larger mass relative to body weight, more cortical neurons, and distinct connectivity patterns. Human neurons mature more slowly, a trait known as neoteny, likely influencing these differences. Gene regulation, not new genes, may underlie species differences, particularly in the primate lineage. The role of these regulato...

We know Homo sapiens started in Africa, but we're uncertain about how they spread. Limited fossils and data have hindered our understanding. I'll discuss popular theories about our origins and how recent genetic data from Khoe-San people in southern Africa sheds light on this. Our research suggests a complex history, with population structures dating back to about 120,000-135,000 years ago. Early...

The human penchant for storytelling is universal, early-developing, and profoundly culture-shaping. Stories (folk tales, narratives and myths) influence the costs of social transactions and organize societies at every scale of human interaction. Story as a mode of communication is also unprecedented in the animal kingdom: although we are compelled to tell stories about other animals, they are not...

Animals and tricksters are highly prominent beings in the mythology of the San Bushmen of southern Africa, as well as of hunter-gatherers in other regions of the world. Their actions and interactions provide the plot lines for most of the stories people tell about myth time. Why are these two beings so preeminent in San mythology and storytelling? Is there a connection between the two beings? Math...

Political, financial and environmental crises coupled to the rise of social media have, in recent years, created a perfect storm of mis- and disinformation that leverage long standing reservoirs of belief within and across communities. These stories on social media mirror face-to-face storytelling and other storytelling environments in that they allow for the negotiation of cultural ideology (norm...