Science (Video)

Hans Clevers, M.D., Ph.D., shares his research at the intersection of medicine and biology. Clevers discusses revolutionary advances in personalized medicine, where patient-specific treatments can be developed by studying small samples of patients' tissues. He explores the role of specialized cells known as "best for cells" in gastrointestinal health, shedding light on how they may help fight infections. Additionally, he highlights how mini-organs, or organoids, grown in the lab help us understand complex cellular functions and diseases. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 39066]

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 populations had connections, or gene flow, for hundreds of thousands of years. These "weakly structured stem" models explain genetic diversity that was once thought to come from other hominin species. Unlike previous ideas of interbreeding with archaic humans, our models predict that fossils from these populations should be genetically and physically similar. This variability in theories stems from not considering different possibilities, highlighting the importance of exploring various models to gain more accurate insights into our deep history. Series: "CARTA - Center for Academic Research and Training in Anthropogeny" [Humanities] [Science] [Show ID: 39269]

Water on Earth sustains and connects us, but human activities can increase levels of harmful microorganisms and pollutants in our water systems that have the potential to make us sick or threaten our food supply. Join microbial ecologist Dr. Sarah Allard as she presents emerging research from Scripps Oceanography that sheds light on how natural microbial systems respond to these harmful contaminants in systems as diverse as freshwater river ecosystems and marine invertebrate digestive tract microbiomes. Series: "Jeffrey B. Graham Perspectives on Ocean Science Lecture Series" [Science] [Show ID: 39249]

Carla Kim, Ph.D., explains how aging impacts lung cell biology and its potential to reshape our understanding of diseases, including lung cancer. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 39254]

Siddhartha Jaiswal, M.D., Ph.D., discusses clonal hematopoiesis and its impact on aging and diseases. Jaiswal highlights the role of genetic variations, focusing on a specific gene, TET2, and its link to clonal expansion. He explains that certain genetic variations can slow clonal expansion, potentially offering insights into treatments or interventions to mitigate its effects. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 39260]

Astronaut Peggy Whitson, Ph.D., and Lisa Carnell, Ph.D., discuss various aspects of space exploration, life in microgravity, and the future of space science and research. They delve into the challenges astronauts face, from taste differences in space to innovative 3D printing solutions. The conversation also highlights the importance of stem cell research, personalized medicine, and drug development in space. Whitson's unique perspective offers insights into the awe-inspiring views of Earth from space and the collective responsibility to protect our planet. This thought-provoking discussion exemplifies the intersection of science, space exploration, and the promise of a future beyond our planet. Series: "Stem Cell Channel" [Science] [Show ID: 39073]

Ronald DePinho, M.D., explains how telomerase, typically linked to telomere maintenance, serves as a transcriptional co-activator in the brain. Epigenetic repression of TERT, the gene for telomerase, occurs with aging, contributing to aging hallmarks like cellular senescence and inflammation. DePinho's team developed a compound that reactivates TERT, which, when administered to mice, reverses age-related changes. It restores cognitive function, reduces amyloid plaque, and alleviates inflammation. This suggests that maintaining TERT levels can counteract age-related cognitive decline and neurodegeneration, offering potential for treating neurodegenerative diseases like Alzheimer's. DePinho's work expands our understanding of telomerase's multifaceted role in aging and neurodegeneration, holding promise for interventions against these age-related processes. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 39071]

Leonard Zon, M.D., discusses cutting-edge research on the intricate relationship between macrophages, stem cells, and the development of leukemia using the zebrafish model. He delves into the fascinating interactions between these cell types, highlighting the role of a "don't eat me" signal and the influence of the leukemic niche. Through cellular barcoding and single-cell RNA sequencing, he unveils a potential therapeutic target which may offer promising insights into treating leukemia by disrupting the stromal activities that support it. Zon showcases the power of zebrafish models in advancing our understanding of hematopoiesis and cancer, promising new avenues for research and treatment. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 39064]

Are you curious about the future of medical treatments and how they might impact your health? Malcolm Moos, Jr., M.D., Ph.D., shares how cellular therapies are revolutionizing medical treatments. Explore how cells hold the potential to provide new hope for individuals facing various health challenges. Delve into the concept of personalized medicine, discover how regulatory agencies are safeguarding patients' well-being, learn the science behind cell behavior and genetics, and how these processes influence innovative medical treatments and so much more.

Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 38330]

Groundwater is often referred to as an invisible resource, hidden beneath our feet. Groundwater wells—the infrastructure used to access groundwater—are small, distributed, and lost among landscapes. By contrast, our surface water infrastructure is large and visible—reservoirs that support water supply and recreation, dams, and . In this talk, Debra Perrone reveals the results of a five-year research project to record the location and construction details of millions of groundwater wells. The research provides vital insights into the haves and have nots of water and identifies strategies to minimize the impacts of groundwater depletion. Series: "GRIT Talks" [Science] [Show ID: 39278]