Science Podcasts

The most interesting people in the world of science and technology

The most interesting people in the world of science and technology


United States


The most interesting people in the world of science and technology






Episode 122: James Kirkland on targeting senescent cells to reverse age-related diseases

In today’s episode, we talk about zombie cells, a term used to describe senescent cells because of their refusal to die. Our guest on this topic is Dr. James Kirkland, a geriatrics specialist and researcher at the Mayo Clinic in Rochester, Minnesota, who is known for his research into the role that senescence and senescent cells have on age-related dysfunction and chronic disease. As senescent cells build up in the body, they promote cellular aging and a host of chronic conditions related to...


Episode 121: Pascal Lee on the Mars mission and our search for alien life in the galaxy

It has been nearly a month since NASA’s Perseverance rover landed on Mars. So far, the rover hasn’t detected any signs of past life on the planet. But scientists have determined that several of the rocks on Mars are chemically similar to volcanic rocks on Earth. This, of course, has caused quite a bit of buzz. So, the double-secret-selection committee decided it was a perfect time to invite the chairman of the Mars Institute onto the show to get his take on the Perseverance and the Mars...


Episode 120: Gordon Lithgow on alpha-ketoglutarate’s potential to affect healthspan and lifespan

Ever since Cell Metabolism published a study that found the naturally occurring metabolite alpha-ketoglutarate reduces inflammatory signaling as well as chronic inflammation, listeners have been asking Ken and Dawn for their take on the paper. Today, we have the author of the paper, Dr. Gordon Lithgow, as our guest on STEM-Talk. We talk with Gordon in-depth about his study and the potential of alpha-ketoglutarate to have positive effects on lifespan and healthspan. Gordon is a professor and...


Episode 119: Gordon Lithgow talks about the biology of aging and prolonging lifespan

Episode 119: Gordon Lithgow talks about the biology of aging and prolonging lifespan Our guest today is Dr. Gordon Lithgow, a professor and vice president of Academic Affairs at the Buck Institute in Novato, California. Gordon’s research focuses on uncovering genes and small molecules that prolong lifespan through enhanced molecular stability. Because our conversation with Gordon was so extensive and fascinating, we have split his interview into two parts. In today’s part one of the...


Episode 118: Julie Andersen talks about urolithin-A’s potential to prevent and treat neurodegenerative diseases

Today we have part two of our conversation with Dr. Julie Andersen, a professor at the Buck Institute who is conducting fascinating research into the metabolite compound urolithin-A. Laboratory experiments have demonstrated urolithin-A’s ability to induce mitophagy, which is a selective recycling of mitochondria by autophagy, a process that cleans defective mitochondria and becomes less efficient during aging. Julie’s research has focused on the potential of urolithin-A to prevent and treat...


Episode 117: Julie Andersen talks about her research into aging and neurodegenerative diseases

Our guest today is Dr. Julie Andersen, who is best known for her research into aging and age-related diseases. A professor at the Buck Institute Buck Institute for Research on Aging, an independent biomedical research institute that researches ways to extend the healthy years of life, Julie and her colleagues at Buck have focused on understanding the underlying age-related processes driving neurodegenerative diseases in order to identify novel therapeutics. Because our conversation with...


Episode 116: Marcas Bamman on the many benefits of exercise and strength training

Our guest today is Dr. Marcas Bamman, an internationally recognized researcher known for his scientific contributions to the biology of human skeletal muscle and medical rehabilitation. Marcas recently joined IHMC as a Senior Research Scientist. He is the founder and former director of the University of Alabama at Birmingham Center for Exercise Medicine. Marcas and the UAB center are recognized as world leaders in the biological mechanisms underlying exercise-induced adaptations and their...


Episode 115: Ken and Dawn answer listener questions about ketogenic diets, Viagra, methylene blue, fasting, Mars and more

It’s that time again for another Ask Me Anything episode. And we must say, listeners sent us a wealth of excellent questions for this round of Ask Me Anything. In today’s podcast, Ken and Dawn answer questions that range from blood-flow restriction to swimming induced pulmonary edema to intermittent fasting to methylene blue to low-carb diets, and much, much more. If you have questions you want to send to Ken and Dawn for an Ask Me Anything episode, email your question to STEM-Talk Producer...


Episode 114: Lilianne Mujica-Parodi talks about how diet and ketones affect brain aging

Our guest today is Dr. Lilianne Mujica Parodi, the director of the Laboratory for Computational Neurodiagnostics at Stony Brook University. We will be talking to Lily about her paper in PNAS last year that revealed neurobiological changes associated with aging can be seen in a person’s late 40s, a much younger age than what was previously thought. She and her colleagues at Stony Brook also found that this process may be prevented or even reversed based on dietary changes that involve...


Episode 113: Peter Pirolli discusses information foraging, AI and the future of human interaction with technology

Today’s interview features Dr. Peter Pirolli, a colleague and senior research scientist here at IHMC since 2017. He previously was a fellow at the Palo Alto Research Center (PARC) and is known for his research into human information interaction. Peter’s work on information foraging theory led to his book “Information Foraging Theory: Adaptive Interaction with Information.” Peter received his doctorate in cognitive psychology from Carnegie Mellon University in 1985 and throughout his career...


Episode 112: Tim Broderick discusses biotechnology and increasing the biological aptitude and careers of elite special forces

Our guest today is Dr. Tim Broderick, the chief science officer here at IHMC. Tim is a surgeon and biomedical scientist who joined IHMC last year. Tim has had a fascinating career as a researcher, surgeon and aquanaut. He is well-known as a pioneer in laparoscopic, robotic and telerobotic surgery. He also has led multiple ground, flight and undersea-based biomedical research projects. As a result, he is an honorary NASA flight surgeon and a NOAA undersea saturation diver. Tim spent four...


Episode 111: Tommy Wood talks about lifestyle approaches to improve health span and lifespan

Today we have the second of our two-part interview with Dr. Tommy Wood. Ken and Dawn talk to Tommy about his ongoing research into lifestyle approaches that can improve people’s health span, lifespan and physical performance. Tommy also talks about the physiological and metabolic responses to brain injury and how these injuries can have long-term effects on brain health. In part one of our interview, episode 110, Tommy shared his thoughts on the research he has done on the importance of...


Episode 110 : Tommy Wood talks about nourishing developing brains and the importance of metabolic health

Dr. Tommy Wood is a UK-trained physician who is making his third appearance on STEM-Talk. Earlier this year before the COVID-19 outbreak, Tommy gave a well-attended lecture at IHMC about the latest research on building and preserving brain health across people’s lifespans. The lecture was so popular we invited Tommy to join us for another STEM-Talk interview. Tommy is a research assistant professor of pediatrics in the University of Washington Division of Neonatology. He was our guest on...


Episode 109: Robb Wolf discusses whether eating meat is bad for you and the environment … and his new book “Sacred Cow”

Today’s guest is Robb Wolf, who is making his third appearance on STEM-Talk. He has a new book, which is being released today, the same day as our interview with Robb goes live. His new book, “Sacred Cow: Why Well Raised Meat Is Good For You and Good For The Planet,” takes a critical look at the assumptions and also the misinformation about meat and provides contrarian views that are science-based showing that meat and animal fat are essential for our bodies. Robb is a former research...


Episode 108: Ken and Dawn tackle questions ranging from AI to amino acids to methylene blue to ketosis to COVID-19

Because of the number of questions that keep pouring in, today we have another Ask Me Anything episode. We also have been receiving requests to do more of these shows, so we plan to record more frequent AMA episodes in the future. If you have questions for Ken and Dawn, email them to STEM-Talk producer Randy Hammer at In today’s episode we touch a little bit on COVID-19, but most questions revolve around diet and sleep and brain health. Ken also explains the meaning behind...


Episode 107: Francisco Gonzalez-Lima discusses methylene blue and near-infrared light as therapies for cognitive disorders

Today we have part two of our interview with Dr. Francisco Gonzalez-Lima, a behavioral neuroscientist at The University of Texas at Austin. Francisco and his colleagues at the Gonzalez-Lima Lab are recognized as world leaders for their research on the relationship between brain energy metabolism, memory and neurobehavioral disorders. Today’s interview focuses on two interventions Francisco has explored with the aim of protecting people against neurodegeneration: low-dose methylene blue and...


Episode 106: Francisco Gonzalez-Lima talks about brain metabolic mapping and Alzheimer’s

Our guest today is Dr. Francisco Gonzalez-Lima, a professor in the department of psychology, pharmacology and toxicology and the department of psychiatry at The University of Texas at Austin. He also is a professor at the university’s Institute for Neuroscience. We covered so much ground in our discussion with Francisco that we have split his interview into two parts. Today’s interview focuses on Francisco’s fascinating background as a youth and Cuban expatriate as well as his early research...


Episode 105: Art De Vany talks about healthspan, lifespan and healing the wounds of aging

Our guest today is Dr. Arthur De Vany, who we interviewed three years ago on episode 30 of STEM-Talk. Art, who is perhaps best known as one of the founders of the Paleo movement, is the author of “The New Evolution Diet: What Our Paleolithic Ancestors Can Teach Us About Weight Loss, Fitness and Aging.” Art is a professor emeritus of economics at the University of California, Irvine. In our first interview, we talked to Art about his early research into the economics of the movie business and...


Episode 104: Katherine Eban talks about the dangers associated with relying on generic drugs manufactured overseas

Today’s interview is with Katherine Eban, an investigative journalist who uncovered the widespread fraud that goes on overseas in the manufacturing of U.S. generic drugs. With the outbreak of the deadly coronavirus, which originated in China but is now spreading across the globe and United States, today’s interview is especially timely. Katherine’s recent book, “Bottle of Lies,” reveals that nearly 80 percent of the active ingredients of all brand-name and generic drugs as well as almost all...


Episode 103: Abe Morgentaler talks about men’s health, sex drive and the benefits of testosterone therapy

Today’s interview is with Dr. Abraham Morgentaler, an internationally known pioneer in men’s sexuality and the founder of the first comprehensive center in the U.S. specializing in men’s health. Abe’s research has upended longstanding concepts regarding testosterone therapy, prostrate cancer and male sexuality. He is particularly credited with research that has contradicted the established view that testosterone injections led to elevated risks for prostate cancer. In today’s interview, we...