Science (Audio)

The essence of Being Human is the practice of Biocultural Reproduction (BCR). BCR is defined as the set of marriage and kinship based rules for extra-maternal cooperation in the production, feeding, and care of offspring. Human evolution theory needs to explain how people successfully combined a vastly extended period of offspring dependency and delayed reproduction with helpless newborns — with large heads and much body fat (even with problems giving birth) -- a short duration of breast-feeding, an adolescent growth spurt, and vigorous post-menopause valuable grandmothers. Are these characteristics a package or a mosaic? Series: "CARTA - Center for Academic Research and Training in Anthropogeny" [Humanities] [Science] [Show ID: 40697]

Musculoskeletal disorders are one of the most important challenges of modern medicine worldwide. They are often attributed to maladaptations of our body to our peculiar form of locomotion, upright bipedalism. This lecture will explore the evolutionary origin of major musculoskeletal disorders such as back problems and hip joint osteoarthritis. I will show that these problems represent a relatively recent phenomenon, occurring only during the last few decades, and thus are unrelated to our skeletal adaptations. Series: "CARTA - Center for Academic Research and Training in Anthropogeny" [Humanities] [Science] [Show ID: 40696]

Phenotypic variation within the skeleton has biological, behavioral, and biomedical functional implications for individuals and species. Thus, it is critical to understand how genomic, environmental, and mediating regulatory factors combine and interact to drive skeletal trait development and evolution. One way to do this is by studying skeletal diseases that disrupt skeletal function — like osteoarthritis (OA) which is a chronic disorder characterized by the degradation of cartilage and underlying bone in joints and can lead to severe pain and mobility limitations. This talk will discuss what is known about OA in humans and other primates, as well as recent advances that are further informing these topics. Series: "CARTA - Center for Academic Research and Training in Anthropogeny" [Humanities] [Science] [Show ID: 40695]

The Birch Aquarium celebrates the incredible contributions of women in the rich history of marine plankton research at Scripps. Judit Hersko performs part of her innovative series of visual narratives, "Pages from the Book of the Unknown Explorer," transporting you to Scripps’ early days through a cleverly imagined correspondence between Dr. Easter Cupp, Scripps' first female Ph.D. graduate, and a fictitious female explorer inspired by Hersko's research and field experience in Antarctica. Melissa Carter takes us on a journey through nearly a century of observations from Scripps Pier, bringing us to the present day. She provides an insider’s look at emerging research and observational technologies used on the pier and explores how these innovations drive new, groundbreaking discoveries in marine plankton research. Series: "Jeffrey B. Graham Perspectives on Ocean Science Lecture Series" [Humanities] [Science] [Show ID: 40595]

The rate of cancer and cancer malignancy differ greatly among mammalian species. The placental – maternal interface is also highly variable between placental mammals. This lecture will discuss recent advances that suggest that there is a causal connection between the evolution of placental biology and the biology and rate of cancer malignancy. Series: "CARTA - Center for Academic Research and Training in Anthropogeny" [Humanities] [Science] [Show ID: 40694]

Menstruation is the cyclical shedding of the endometrium triggered by falling progesterone levels. Menstruation is a rare trait found in less than 2% of mammals and likely evolved independently at least 4 times. Why do some mammals menstruate while most do not? The leading hypothesis is that menstruation occurs as a nonadaptive consequence of spontaneous decidualization of the endometrium, which evolved to increase biosensoring of embryo quality. While the trait of spontaneous decidualization (and as a byproduct, menstruation) was likely shaped by natural selection, menstruation also disposes women to conditions such as endometriosis, pre-menstrual syndrome, and bleeding disorders, especially in the contemporary context. Series: "CARTA - Center for Academic Research and Training in Anthropogeny" [Health and Medicine] [Humanities] [Science] [Show ID: 40693]

William Lowry, Ph.D., discusses manipulating metabolic pathways in hair follicle stem cells to inhibit tumorigenesis. By blocking glycolysis and glutamine lysis simultaneously, they observed tumor regression, highlighting the complex interplay between metabolism and cancer. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 39256]

Pressures of life on Earth experienced by our ancestors – as multicellular beings, as hosts to parasites, and as home to microbes – shaped the evolved structure and function of our immune systems.  Some of the traits favored by natural selection have conferred resistance against infections while opening vulnerabilities to autoimmune diseases.  I will illustrate why analysis of the deep-time origins of mammalian immune systems reveals general principles of optimal defense and helps to explain why hosts are so profoundly variable in their susceptibility to infectious and inflammatory diseases. Series: "CARTA - Center for Academic Research and Training in Anthropogeny" [Humanities] [Science] [Show ID: 40692]

Superradiance: Embodying Earth is a multiscreen video and sound installation by artists Memo Akten and Katie Peyton Hofstader that serves as a centerpiece of Embodied Pacific: Oceans Unseen. Learn how collaboration-inspired immersive displays engage us and shape our understanding and appreciation of the ocean’s unseen mysteries. The Birch Aquarium hosts this Jeffery B. Graham Perspectives on Ocean Science Lecture Series for a conversation with the artists as they describe how they use art to engage us in science, evoking a visceral and intimate connection to our living planet! Series: "Jeffrey B. Graham Perspectives on Ocean Science Lecture Series" [Science] [Show ID: 40593]

The human body has traits that evolved at different times, from 1.5 billion to 2 million years ago, each bringing health benefits and risks. Multicellularity enabled organs and cancer. The immune system defends us but can cause inflammation. Breastfeeding supports infant health but relates to breast cancer risk. Menstruation and invasive placentas improved reproduction but led to pain and cancer risks. Human-specific traits like bipedalism and aging brought new issues like back pain and childbirth problems. Hair loss and sweat glands helped us stay cool but increased skin cancer risk. Our hunter-gatherer past shaped our microbiome and health, but also made us prone to modern diseases from lifestyle changes. Series: "CARTA - Center for Academic Research and Training in Anthropogeny" [Humanities] [Science] [Show ID: 40701]