Science Friday

In this discussion, Sarah Ledford, an associate professor of geosciences at Georgia State University, unpacks the long recovery of Asheville’s drinking water after Hurricane Helene. She explains how flooding disrupted clean water supplies and the effects of sediment on reservoirs. The conversation also touches on a Gulf Coast tribe's innovative use of recycled oyster shells to combat erosion and restore their land, showcasing creative solutions to the serious challenges posed by climate change.

In this engaging discussion, Donald Johanson, the paleoanthropologist who discovered Lucy, and Zeray Alemseged, who found 'Lucy's baby,' dive into the monumental impact of these discoveries on human evolution. They reminisce about the last 50 years of research, revealing how Lucy has shaped our understanding of ancestry. The conversation highlights her cultural significance in Ethiopia and inspires a reflection on our identity. Listeners gain insights into the responsibility we hold in relation to our evolutionary past and the natural world.

Charles Bergquist, a Science Friday contributor passionate about space exploration, joins Chad Munger, CEO of Mammoth Distilling, who focuses on local ingredients in craft distilling. They discuss SpaceX's successful in-orbit engine test of the Starship, which could revolutionize lunar travel. The conversation shifts to a fascinating story about reviving rye seeds from a shipwreck, potentially transforming whiskey production. They also touch on the loudness of rocket launches and breakthroughs in science from saber-toothed kitten discoveries to using light to combat PFAS chemicals.

Jack Bishop, Senior Content Advisor at America’s Test Kitchen, reveals the science behind culinary successes and failures. He explains how the right amount of water and vodka can create the perfect pie crust while keeping it easy to handle. Discover the secrets to poaching eggs for ideal texture using vinegar and the power of fat when cooking eggs. Bishop also explores how brining enhances moisture in lean meats and the impact of different cooking oils on flavor and health. This enlightening discussion is sure to elevate your cooking game!

Dr. Erica Hartmann, an associate professor in Civil & Environmental Engineering at Northwestern University, dives into the surprising world of bacteriophages found in our bathrooms. Over 600 different viruses, mostly novel to science, were discovered lurking in showerheads and toothbrushes. She explains how these viruses prey on bacteria and their potential as alternatives to antibiotics amidst growing resistance. The conversation also touches on the historical efforts in bacteriophage research and the need for modern techniques to unlock their medical possibilities.

Lexi Krupp, a science and health reporter from Vermont Public, explores the intersection of invasive plants and tick-borne illnesses. She discusses how managing Japanese barberry can potentially reduce blacklegged tick populations, thus mitigating Lyme disease risks. The conversation then shifts to an incredible 80-million-year-old fossil of Navaornis hestiae, which sheds light on the evolution of bird brains. Researchers highlight unexpected similarities between ancient and modern bird skulls, revealing new insights into avian evolution.

The podcast delves into the captivating history and cultural perceptions of the gut, likening it to a 'second brain' due to its shared neuroreceptors with the brain. Discover how views on digestive health have evolved, once seen as unruly, now recognized as a complex ecosystem. It highlights historical figures like Dr. William Arbuthnot Lane and his controversial obsession with constipation. Adding a whimsical twist, the discussion also explores the surprising connection between digestion and dream content, particularly influenced by different cheeses.

Umair Irfan, a senior correspondent at Vox, discusses the alarming absence of leaders from the world's top polluting nations at the UN climate conference in Azerbaijan. He highlights the urgent need for wealthier countries to support developing nations affected by climate change. Irfan also sheds light on the concerning spike in walking pneumonia cases among young children, sharing insights on transmission and health guidelines to keep families safe. Plus, he touches on rising alcohol consumption trends and fascinating discoveries in ancient ecosystems.

Dr. Oliver Sacks, a renowned neurologist and author, shares his fascinating insights into the brain's relationship with music. He explains how music often lingers in our minds long after other memories fade and discusses why individuals with limited language skills can still sing flawlessly. The conversation delves into music's evolutionary significance, its unique processing in the brain, and the emotional triggers it evokes. Sacks also touches on therapeutic uses of music in treating neurological conditions, highlighting the profound impact of sound on the human experience.

Daniel Baker, a PhD student in immunology at the University of Pennsylvania, dives into the groundbreaking potential of CAR-T cell therapy for autoimmune diseases like lupus. He discusses a Chinese study where donor CAR-T cells put autoimmune diseases into remission, suggesting scalability for treatment. Additionally, the episode highlights research on yellow-bellied marmots, exploring how early life adversity affects their survival, linking animal stressors to broader environmental challenges and conservation strategies.