Science (Audio)

How do you navigate a nonlinear, “squiggly line” career in science and public health? Dr. Katelyn Jetelina, an epidemiologist and scientific communicator, explores challenges of science communication within academia—from cultural resistance to misaligned incentives—and why so much vital research never reaches the public. Joined by Dr. John Schwartzberg, Professor Emeritus, School of Public Health,...

We’re surrounded by digital devices — from phones and tablets to streaming platforms and social media. In this excerpt, Kristy Hamilton, Assistant Professor in the Department of Communication at UCSB, shares research on how digital media shapes the way we see ourselves and the way we behave. Series: "GRIT Talks" [Science] [Show ID: 41215]

The Kazakh and Mongolian Steppes span 5,000 kilometers west to east along the northern latitude of Asia. This unique ecozone allowed rapid movements of people, animals, goods, and ideas across Eurasia since prehistory and harbored numerous polities of pastoralists that made tremendous impacts on human history. However, the region’s dynamic genetic history has been emerging only recently from archa...

Humans have a deep and complex relationship with microbes. Beyond disease, microbes also profoundly shape human health and behavior through their activity in the microbiome and their diverse roles in food and cuisine. And yet we know very little about the origin, evolution, or ecology of the trillions of microorganisms that call us home. Christina Warinner of Harvard University discusses recent ad...

David Gokhman of the Weizmann Institute of Science explores how changes in gene regulation shaped recent human evolution. His team used massively parallel reporter assays in skeletal and neural cells to test 71,443 genetic variants that distinguish Neanderthals and Denisovans from modern humans, building a catalog that reveals hundreds of noncoding variants that alter gene expression. The work unc...

Peter Godfrey-Smith, Professor of History and Philosophy of Science at the University of Sydney, explores the evolutionary roots of consciousness by surveying animal evolution and the emergence of felt experience in several lineages. He examines two central philosophical questions: how such experience might arise gradually, existing in partial forms, and whether it represents a single unified feat...

The sequencing of genomes from archaic humans, such as Neanderthals and Denisovans, has transformed our understanding of human evolutionary history. These ancient genomes reveal that modern humans did not evolve in isolation but interbred with now-extinct groups, leaving lasting genetic legacies. To date, genomic sequences from 31 archaic human individuals, including four sequenced to high coverag...

Alejandro Sánchez Alvarado, Ph. D., argues that real progress in understanding regeneration comes from studying whole organisms rather than cells grown under artificial conditions. Sánchez Alvarado shows how observations from intact animals reveal organizing rules that narrow laboratory systems can miss. He presents evidence that stem cells in a studied animal lack detectable junctions with neighb...

Climate investor and philanthropist Tom Steyer, recipient of the 2025 Charles David Keeling Memorial Lecture, talks about the current and future state of energy. In a conversation with Scott Lewis of Voice of San Diego, Steyer argues that capitalism and policy must work together at scale, and highlights the marketplace rise of renewables like solar and EVs alongside challenges like slow fossil-pla...

The genome sequences of Neandertals and Denisovans have provided a wealth of new information about the origins, migrations, and interactions of ancient humans. These genomes have revealed that mixture between hominin groups was common: all modern humans outside Africa carry around 2% Neandertal DNA from a single major episode of Neandertal gene flow, while the ancestors of present-day Asians and O...

An in vivo brain organoid platform reveals how human neurons and glia interact across development, aging, and disease. Fred H. Gage, Ph. D., generates three dimensional organoids from induced pluripotent stem cells and examines their maturation, synapses, and network activity with two-photon imaging and single-cell profiling. Gage integrates human microglia and astrocytes to study immune signaling...

It is well known that inside nearly every living cell on this planet, there are instructions powering the dynamics of everything in the cell, known as deoxyribonucleic acid (DNA). Enoch Yeung, Associate Professor of Mechanical Engineering at UC, Santa Barbara, explains how DNA is the genetic code that tells cells where to live, how to live, and how to adapt when things get tough. Editing DNA has u...

Clinical trials turn scientific discoveries into real options for patients and volunteers, advancing care while safeguarding participants. Sheldon Morris, M.D., M.P.H., explains how independent oversight, core ethical principles, and stepwise phases evaluate safety and benefit, and clarifies participants’ rights and responsibilities. Sandip Patel, M.D., F.A.S.C.O., highlights how carefully designe...

Nature has been running chemistry experiments for over 4 billion years—yet today, much of modern organic chemistry still depends on wasteful, resource-heavy methods that rely on oil-based solvents. These solvents aren’t recycled, and when burned, they release CO2, adding to climate change. But what if chemistry could be done differently? Bruce Lipshutz, Distinguished Professor of Chemistry at UC S...

Wine down with Chancellor May as he meets up with some of the students, staff and faculty from the Department of Viticulture and Enology — recognized as one of the best programs in the world. Chancellor May tours the winery and vineyard, learns about the winery's cutting-edge technology and sustainability practices, and even helps crush grapes before sampling the final product with his "partner in...

What does it really mean to go zero waste? At UC Davis, the answer is both innovative and inspiring. Episode 4 of ‘Sustainably UC Davis’ explores how the university is moving toward a zero-waste future—from converting campus food scraps into renewable energy, to phasing out single-use plastics in food service. Featured in the episode are Joseph Yonkoski, Facilities Management superintendent of the...

We’re surrounded by digital devices—from phones and tablets to streaming platforms and social media. With so many options at our fingertips, each of us faces choices about when and how to use technology in ways that align with our goals and values. In this talk, Kristy Hamilton, Assistant Professor in the Department of Communication at UCSB, shares research on how digital media shapes the way we s...

Batteries have become an essential component of our daily life. They power our smartphones, laptops, tablets, and many of the cars around us. They are also key to the renewable energy transition. Building better batteries requires the design of materials whose chemical composition and structure evolve drastically on charge and discharge, yet those changes must be perfectly reversible for the devic...

Marisa Korody, Ph. D., leads groundbreaking work at the San Diego Zoo Wildlife Alliance’s Beckman Center for Conservation Research, where scientists use advanced genetic and stem cell technologies to protect endangered species. Korody highlights efforts to save the critically endangered northern white rhino by developing induced pluripotent stem cells that can be transformed into egg and sperm pre...

Advances in precision medicine and patient advocacy are transforming the way cancer is understood and treated. Nikoo McGoldrick shares her personal journey with metastatic breast cancer, emphasizing the importance of patients having a voice in their care. Sheldon Morris, M.D., M.P.H., explains how regenerative medicine progresses through stem cell therapies, gene therapies, CAR-T cell treatments,...

Scott A. Armstrong, M.D., Ph. D., of the Dana-Farber Cancer Institute, studies how certain aggressive forms of acute myeloid leukemia (AML) develop and survive. His work centers on a protein called menin, which helps leukemia cells keep cancer-promoting genes switched on. Armstrong’s team has found that blocking menin with specially designed drugs can shut down these gene programs, push leukemia c...

For many people, a personal connection to the ocean ties into bigger issues like conservation and climate change. As the biodiversity of marine life along the coast at La Jolla Shores has declined, divers and researchers discuss why simply knowing about environmental problems isn’t enough. They emphasize the importance of conservation psychology, storytelling, and inspiration to encourage action....

What’s the best way to get college students interested in nature? By getting them outside and teaching them valuable skills in wildlife conservation and habitat restoration. Associate Professor Laci Gerhart’s popular “Wild Davis” course does just that, and students who complete the course can earn California Naturalist Certification. Series: "UC Davis News" [Science] [Show ID: 41070]

At the UC Davis Student Farm, students bring sustainable food systems to life. In Episode 2 of 'Sustainably UC Davis', we explore student-led efforts in sustainable agriculture. Environmental and social sustainability remain central to the Student Farm’s mission, from organic practices to food justice. Hear about these topics and more from Colin Dixon, Director of the Student Farm, as well as staf...

Why does amber light ease stress and anxiety? One theory is that it’s similar to the natural orange light experienced in nature, like sunsets and campfires. Thanks to interest and funding in color psychology research, discoveries like this will improve emotional and mental health for everyone, especially those who need it most like hospital patients and those in elder care housing. Series: "UC Dav...