CARTA - Anthropogeny (Audio)

Richard “Ed” Green, Assistant Professor of Biomolecular Engineering at UC Santa Cruz, explains how and what we know about our relation to Neandertal Series: "CARTA - Center for Academic Research and Training in Anthropogeny" [Science] [Show ID: 21981]

Evan Eichler is an Associate Professor of Genome Sciences at the University of Washington. The long-term goal of his research is to understand the evolution, pathology and mechanisms of recent gene duplication and DNA transposition within the human genome. Series: "CARTA - Center for Academic Research and Training in Anthropogeny" [Science] [Show ID: 21982]

Alysson Muotri, Assistant Professor at UC San Diego, focuses on human brain development and evolution, exploring mobile elements as generators of neuronal diversity. He is also interested in modeling neurological diseases using human induced pluripotent stem cells. Series: "CARTA - Center for Academic Research and Training in Anthropogeny" [Science] [Show ID: 21983]

Katherine Pollard, Associate Investigator at the Gladstone Institutes and Associate Professor of Biostatistics at UC San Francisco, specializes in evolutionary genomics, in particular identifying genome sequences that differ significantly between or within species and their relationship to biomedical traits. Series: "CARTA - Center for Academic Research and Training in Anthropogeny" [Science] [Show ID: 21984]

Yoav Gilad is Associate Professor of Human Genetics at the University of Chicago. He studies genetic and regulatory differences between humans and our close evolutionary relatives, with the long-term goal of identifying the genetic basis for human-specific traits, including genetic variation that underlies higher susceptibility to certain diseases and disorders in humans than in other primates. Series: "CARTA - Center for Academic Research and Training in Anthropogeny" [Science] [Show ID: 21985]

Genevieve Konopka is an Assistant Professor of Neuroscience at UT Southwestern Medical Center. The focus of her research is elucidating how developmental signaling pathways are disrupted in neuropsychiatric illnesses, and identifying human-specific pathways that are vulnerable to neuropsychiatric disease. Series: "CARTA - Center for Academic Research and Training in Anthropogeny" [Science] [Show ID: 21986]

Ajit Varki, Distinguished Professor in the Departments of Medicine and Cellular & Molecular Medicine, Co-Director of CARTA, and Co-Director of the Glycobiology Research and Training Center at the University of California, San Diego, focuses on a family of cell surface sugars called the sialic acids, and their roles in biology, evolution and disease. Series: "CARTA - Center for Academic Research and Training in Anthropogeny" [Science] [Show ID: 21987]

Humans live in a world of ideas—born in the brain, shared through language, accumulated in culture across generations, and made reality. From the first flaked stone tools to the building of shelters, from figurative and symbolic art to abstract thought, our brains are engines of imagination—an “idea organ” that has transformed both our species and the planet itself.

The distinct biology of the human brain, scaffolded by language and culture, allows ideas to be formed, named, shared, and accumulated across generations. This process of cumulative culture, knowledge built upon knowledge, has propelled humans far beyond the cognitive landscapes of other large-brained animals, including our closest living and extinct relatives.

This symposium explores how the human brain develops, functions, and maintains its role as the seat of ideas. We trace its story from molecules, cells, neuronal migration and circuitry, to the maternal, parental, and social influences that shape its growth, including the countless ways that brain function can be compromised at any stage of life. We examine how the uniquely human interplay of biology and culture gave rise to a brain capable of perceiving and remaking the world around us. By examining the evolutionary roots of our “idea organ,” we aim to illuminate how this singular capacity emerged—and how it continues to drive human innovation. Series: "CARTA - Center for Academic Research and Training in Anthropogeny" [Science] [Show ID: 41359]

The extraordinary abilities of the cerebral cortex are central to what sets humans apart from other species. A defining feature of the cortex is its organization along a sensorimotor-to-association (S–A) axis, extending from primary sensorimotor areas to transmodal association regions that support abstract cognition. This axis varies across species and has been profoundly remodeled in humans. Nenad Sestan, professor of neuroscience at Yale, discusses his recent work on the molecular and cellular mechanisms that govern the development and evolution of the cortical S–A axis, with particular emphasis on the prefrontal cortex and its broader distributed transmodal association networks as well as their evolutionary expansion, functional roles, and vulnerability in neurological and psychiatric disorders. Series: "CARTA - Center for Academic Research and Training in Anthropogeny" [Science] [Show ID: 41361]

Human brain expansion is often discussed in terms of the genetic and molecular innovations that drove uniquely human cognitive abilities. Yet evolution is fundamentally a process of tradeoffs. Disproportionate expansion of forebrain structures increases the demands placed on long-range connectivity, metabolism, and cellular maintenance, imposing costs that scale with brain size. Alex Pollen, associate professor of neurology at UC San Francisco, discusses using stem-cell-derived brain organoids to investigate the development of human-specific connectivity differences in dopaminergic neurons and to test whether these cells deploy compensatory mechanisms to cope with the metabolic and structural demands of large brains. His research findings support a model in which human brain evolution involves not only mechanisms driving greater computational capacity, but also the emergence of cellular adaptations that mitigate the costs of large, highly connected brains. Series: "CARTA - Center for Academic Research and Training in Anthropogeny" [Science] [Show ID: 41357]