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Jun 20, 2017 • 1h 9min

Episode 40: Allan Savory talks about the global importance of restoring the earth’s grasslands

Joining us for this special edition of STEM-Talk is Robb Wolf, who will co-host today’s show with Ken Ford, STEM-Talk’s regular co-host and chairman of the Double-Secret Selection Committee which selects all the STEM-Talk guests. Wolf is the New York Times best-selling author of “The Paleo Solution” and “Wired to Eat.” He’s also a friend of today’s guest, Allan Savory, a world-renowned ecologist who advocates for the restoration of the earth’s grasslands. “I’ve known Allan for years as a passionate advocate for restoring the health of the earth, especially grasslands. So when Ken invited me to join him and co-host the podcast with Allan, I jumped at the chance,” said Wolf, who is filling in for regular STEM-Talk co-host Dawn Kernagis. Grasslands take up a third of the earth’s land surface. And, as you will learn in today’s podcast, they are in serious trouble. Seventy percent of grasslands have been degraded by global trends ranging from deforestation to droughts to agricultural and livestock practices. As more and more of earth’s fertile land rapidly turns into deserts, Savory travels the world promoting holistic management as a way to reverse thousands of years of human-caused desertification. Savory is an ecologist, international consultant and the president of the Savory Institute, which promotes large-scale restoration of the world’s grasslands. Desertification, which Savory says is just a fancy word for land that’s turning to desert, directly affects more than 250 million people worldwide and has placed another billion people at risk, according to the United Nations. Savory was born in Southern Rhodesia, which is now the nation of Zimbabwe, and went to college in South Africa where he majored in zoology and biology. He went to work as a research biologist and game ranger in what was then known as Northern Rhodesia, but is now the nation of Zambia. Later in his career, he became a farmer and game rancher in Zimbabwe. As a game ranger in the 1960s, Allen made a significant breakthrough in understanding what was causing the degradation of the world’s grassland ecosystems and became a consultant who worked with groups on four continents to develop sustainable solutions. Most of his time as a game ranger was spent in the country’s savannas and grasslands among antelopes, elephants and lions. It was then that Allan started to notice that the healthiest grasslands were those in which large herds of wild grazers stayed bunched together and were constantly on the move because of predators that hunted in packs. It was this insight that led Savory to develop what he refers to as a “holistic management framework,” a planning process that mimics nature as a means to heal the environment. Once an opponent of livestock, he grew to believe that increasing the number of livestock on grasslands rather than fencing them off for conservation was the way to stop desertification. But when civil war broke in Rhodesia in the ‘60s, Allan ended up leading an elite military squad to fight communist guerrillas. In the latter days of the civil war, Allan became a member of Parliament and the leader of the opposition to the ruling party. He was exiled in 1979 as a result of his opposition to the ruling party and immigrated to the United States. In 1992, Savory and his wife, Jody Butterfield, formed the non-profit Africa Centre for Holistic Management and donated a ranch that serves as learning site for people all over Africa. He and Butterfield then co-founded the Savory Institute in 2009, whose mission is to promote restoration of the world’s grasslands through holistic management. The couple lives in Albuquerque, New Mexico, and have co-authored books together, including “Holistic Management: A Commonsense Revolution to Restore Our Environment,” which came out last year. In 2003, Allen received Australia’s International Banksia Award for the person or organization doing the most for the environment on a global scale. In 2010, he received the Buckminister Fuller Institute’s Challenge award for work that has significant potential to solve humanity’s most pressing problems. The Savory Institute also is one of 11 finalists in the Virgin Earth Challenge, a $25 million initiative for the successful commercialization of ways to take greenhouse gases out of the atmosphere. Links: Savory Institute –  http://www.savory.global “Holistic Management: A Commonsense Revolution to Restore Our Environment” – http://amzn.to/2sHBkmm “Holistic Management Handbook – http://amzn.to/2sI0Is7 Show notes: 4:51: Ken and Rob welcome Allan to the show. 5:01: Ken comments on how Allan has travelled an incredibly varied path through life and asks Allan to discuss his experiences as a biologist and park ranger in Africa. 8:23: Ken discusses the time Allan spent fighting communist guerrillas when civil war broke out in Zimbabwe in the 1960s and comments on the elite military group that Allan hand-picked and trained. Ken asks Allan to talk about how and why he was selected to lead this unit and about his methods of selection and training. 10:43: Rob asks Allan about the significance of the herds of wild grazing animals, that Allan observed when he spent time in the savannahs and grasslands as a game ranger and solider. 14:38: Rob discusses how in the later days of the civil war Allan served as a member of parliament, but in 1979 ended up being exiled and emigrated to the United States. Rob then asks Allan to talk about this part of his life. 17:50: Ken comments on how Allan has led an interesting life and taken on numerous difficult positions, never shunning a painful choice or controversy. 18:35: Rob discusses Allan’s frame of reference, now called holistic management, that he began developing. Holistic management mimics nature and also draws on organizational skills learned in the military and is considered by Allan as a legitimate option to heal the environment and reverse desertification. Rob asks Allan to clarify what holistic management is and when and how it developed. 22:09: Rob asks Allan to describe the desertification and the impact it’s having on the earth. 30:31: Ken asks Allan to discuss how he met his wife, Jodi Butterfield, and how the two of them created the Savory Institute, which works to promote preservation of the world’s grasslands through holistic management. 32:25: Ken asks Allan to share the activities and goals of the Savory Institute. 36:37: STEMTALK BLURB 37:04: Rob comments on how the world seems to always bifurcate into two ideological camps. On one hand there are malthusiasts, or folks who have predicted a number of collapse scenarios, resource depletion, mass starvation, etc., and although extremely convincing at times, their predictions are usually wrong. The other ideological group may be referred to as rational optimists, who make the case that markets and innovation will always save the day. Today, it is generally argued that rational optimists win the debate, but Rob has a gut sense that this may not go on indefinitely. Rob asks Allan what his views on this topic are, and whether he is a malthusiast or rational optimist. 44:06: Robb talks about advances in evolutionary medicine and how traditional medicine often chases symptoms in lieu of finding solutions. Robb asks Allan if he sees a parallel with sustainability in food production, and if this evolutionary framework could inform our approach to a sustainable future. 48:18: Ken comments on how many people are surprised to learn about the predator-prey interaction in the holistic management process and asks Allan to talk about this interaction. 51:41: Rob asks Allan to expand upon the constant battle of the topic of holistic management and properly managed grazing animals. 54:30: Ken remarks that many people have jumped on Allan’s claims regarding the potential of carbon sequestration, both supportive and critical. Ken then asks Allan to elaborate on his views of the efficacy of carbon sequestration in the framework of holistic management. 56:23: Rob asks Allan what the largest benefits are for the farmer adopting the practice of holistic management. 57:54: Ken comments how Joel Salatin of Polyface Farms is a large proponent of holistic management, and how he credits the approach as a key element in transforming Polyface Farms from an uneconomic farm into a prosperous operation, which serves as a model for many other diversified farm operations around the world. https://youtu.be/4dq8vsVvvOc 59:13: Rob asks Allan if there are any specific conditions that he could see the adoption of holistic management in agriculture proceeding either faster or slower around the world. 1:02:05: Ken asks Allan how new technology, such as robotics, may help holistic management practices. 1:04:41: Rob asks Allan to discuss his new book, Holistic Management: A Common Sense Revolution to Restore Our Environment, released in 2016 by Allan and his wife, Jodi. This book is a revised third edition of Allan’s book published in 1990: Holistic Management: A New Framework for Decision Making. Rob comments on how the new book’s subtitle has a more urgent message and asks Allan to talk about why he chose to revise the subtitle. 1:05:47: Rob asks Allan if down time exists for him and what he does for fun in this time. 1:07:03: Allan ends the interview by talking about how it’s important that people take a position and stop sitting on the fence.
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Jun 6, 2017 • 1h 20min

Episode 39: Suzana Herculano provides a new understanding of how our brains became remarkable

Prior to Dr. Suzana Herculano-Houzel’s research, scientists assumed that the brains of all mammals were built in the same way and that the overall brain mass as compared to body mass was the critical determinant of cognitive ability. It was to resolve these conundrums about brain mass, body mass, and intelligence that Herculano-Houzel turned to chainsaws, butchers’ knives, and kitchen blenders to concoct what she refers to as brain soup. As STEM-Talk co-hosts Ken Ford and Dawn Kernagis point out during their interview with Herculano-Houzel, epsisode 39 of the podcast turned out to be not only an enlightening conversation, but also one of the most fun STEM-Talk interviews to date. Herculano-Houzel is a Brazilian neuroscientist who devised a way to count the number of neurons in human and animal brains. She writes about this in her book, The Human Advantage: A New Understanding of How Our Brain Became Remarkable. Her method of counting the neurons of human and other animals’ brains allowed her to study the relation between the cerebral cortex and the thickness and number of cortical folds in the brain. She is currently an associate professor of psychology and biological sciences in Vanderbilt University’s psychological sciences department and the Vanderbilt Brain Institute. She grew up in Brazil and received her undergraduate degree in biology at Federal University of Rio de Janeiro. She went to Case Western Reserve University in Cleveland, Ohio, to get her masters in neuroscience, and completed her Ph.D. in visual neurophysiology at the Max Planck Institute for Brain Research in Frankfurt, Germany. After completing her doctorate, Herculano-Houzel returned to Rio and went to work for the Museum of Life where she designed children’s activities. In 2002 she returned to her alma mater and began researching how human brains compared to other animals. In 2004, she devised a way of reducing brains to liquid as a means to count the number of neurons in them. It is technically known as the “isotropic fractionator.” In 2004 she won the Jose Reis Prize of Science, and in 2010 she received the James S. McDonell Foundation’s  Scholar Award in Understanding Human Cognition.  She is also the author of a biweekly newspaper column on the neuroscience of everyday life for Folha de São Paulo, the major newspaper in Brazil. Going into its 11th year, the column has appeared more than 270 times since 2006.  In addition to “The Human Advantage,” Herculano-Houzel is also the author of six books in Portuguese that focus on the neuroscience of everyday life. She also has a popular blog called “The Neuroscientist on Call,” which she describes as not-so-random thoughts about brains, the universe and everything. She lives in Nashville, TN, with her husband, son and two dogs. Links you may be interested in: “The Human Advantage”: http://amzn.to/2rtvNOY The Neuroscientist on Call blog: http://www.suzanaherculanohouzel.com Show notes: 5:32: Suzana talks about growing up in Rio and how she became interested in science. 7:07: Ken asks Suzana about her work at Rio’s Museum of Life. 12:55: Dawn asks Suzana when she firsts became interested in neuroscience. 16:00: Dawn follows up with a question about the composition of cells in the brain. 29:21: Suzana talks about how the brain represents just 2% of the average human mass, yet requires 25%of person’s energy. 33:14: Dawn tells Suzana she’s curious about Suzana’s method of counting neurons and asks her to talk about how she came up with the idea of brain soup. 38:58: Break 39:24: Dawn reads a portion of a book review that described how Suzana turned to chainsaws, butcher knifes and blenders to concoct brain soup and asks her to elaborate. 42:03: Suzana talks about some of the difficulty she had in locating brains for her research. 53:07: Suzana shares some of the lessons she’s learned from analyzing the brains of more than 100 species. 58:52: Ken asks if the cerebral cortex is the best overall predictor of cognitive ability across species. 59:50: Dawn wonders about whales and asks Suzana what we know about the intelligence of aquatic life. 1:05:41: Ken asks if there are neuronal differences in humans. 1:09:33: Suzana talks about how cooking helped homo erectus, the first modern human species, to double its brain size. 1:14:49: Ken reads an excerpt from an excellent review of “The Human Advantage” that ran in The New York Review of Books. 1:18:35: Ken and Dawn thank Suzana and sign off.
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May 23, 2017 • 1h 38min

Episode 38: Dr. Mark Lupo discusses thyroid nodules and cancer

Thyroid cancer is one of the fastest growing cancers in the United States, especially among women. In Florida, thyroid cancer trails only melanoma skin cancer as the state’s fastest rising cancer. Today’s guest on episode 38 of STEM-Talk has made it his mission to not only treat thyroid cancer, but also raise awareness about the disease. Dr. Mark Lupo is founder and medical director of the Thyroid and Endocrine Center of Florida which is based in Sarasota. A graduate of Duke University, he went on to earn his medical degree at the University of Florida where he worked with the world-famous thyroid expert, Dr. Ernie Mazzaferri. Dr. Lupo also did his internship and residency in internal medicine at Florida and then won a fellowship in endocrinology, metabolism and nutrition at the University of California San Diego and the Scripps Clinic. Dr. Lupo’s research and practice are particularly focused on thyroid nodules, which are abnormal growths of thyroid cells that form a lump within the thyroid gland. Although the vast majority of thyroid nodules are benign, a small proportion do contain thyroid cancer. His practice is centered on diagnosing and treating thyroid cancer at the earliest stage and helping people avoid unnecessary surgeries. He also is very involved in teaching neck ultrasound, thyroid cancer and general thyroid disease to other physicians at the national level.  He has published book chapters and several articles on thyroid disease and thyroid ultrasound.  In addition to his work as the medical director of the Thyroid and Endocrine Center of Florida, he also is a clinical assistant professor on the faculty of the Florida State University College of Medicine. Dr. Lupo also was named the 2017 recipient of the Jack Baskin Endocrine Teaching Award, which is annually presented by the American Association of Clinical Endocrinologists.  You can learn more about the Thyroid and Endocrine Center of Florida by visiting http://www.thyroidflorida.com. Show notes: 3:21: Ken and Dawn welcome Mark to the show and ask him what led him to study medicine at Duke. 4:52: Dawn asks Mark how he ended up choosing endocrinology with a particular interest in thyroid nodules and cancer as a specialty. 6:40: Dawn asks Mark how he found the time to go on incredible adventures, such as climbing Mount Kilimanjaro as he worked to establish a practice. 8:40: Mark provides an overview of the thyroid. 9:46: Dawn asks Mark to clarify about whether a thyroid nodule is the same thing as a goiter. 10:25: Ken comments on how thyroid nodules and cancer seem to be epidemic and how there has been an increase of instances in the United States. He asks Mark if there is a greater incidence of disease or if there is just better detection or a combination of both. 14:33: Dawn asks if we know why thyroid nodules and cancer seems more prevalent in women. 15:01: Dawn inquires about the survival rate for those diagnosed with thyroid cancer, and whether or not it has changed over the years. 17:45: Dawn comments on how she has been looking forward to this interview as a result of a thyroid scare she had in graduate school where there was an inconclusive biopsy. She asks Mark how common it is to have an inconclusive finding and unclear results about a sample. 20:52: Ken comments on his personal experience with thyroid nodules that led to surgery and a positive outcome, and how he met Mark early in this experience after hearing him on a podcast discussing fine needle aspiration. After hearing this podcast, Ken concluded that he most likely needed this procedure. Ken asks Mark to talk about this. 23:37: Dawn asks Mark how often the thyroid nodules are discovered incidentally. 27:34: Dawn asks if there are certain characteristics you can see by ultrasound that give you an idea as to whether you are looking at a benign or malignant nodule. 29:53: Dawn asks what the histological differences are between a benign adenoma and a malignant nodule. 31:16: Ken brings the discussion back to the topic of indeterminate diagnosis, and comments that more of the biopsies are being read as being indeterminate, which leads to more surgeries. Ken asks Mark to discuss this phenomenon. 39:28: Dawn asks which institutions are doing specialized tests. 41:11: Break 41:38: Dawn asks Mark to go into further detail about what we are looking at when we do testing for molecular subtypes. 44:48: Dawn asks Mark if there is a genetic predisposition to any types of thyroid cancer. 48:13: Since positron emission tomography has been helpful in diagnosing metastatic disease in hurthle cell carcinoma, Ken asks if it makes sense to use a ketogenic diet as a supplemental approach to managing the cancer. 52:26: Dawn asks Mark what his thoughts are on the current interest and understanding that cancer is at least partially a metabolic disorder. 53:21: Dawn asks Mark to discuss the different treatment options for thyroid cancer. 1:04:20: Dawn asks Mark to describe the treatment of immunotherapy and how it relates to thyroid cancer. 1:05:56: Dawn asks Mark if thyroid cancer metastasizing varies by subtype. 1:06:58: Mark talks about how lifestyle and environmental exposures might impact the prevalence of thyroid nodules and cancer. 1:09:48: Dawn comments again about her thyroid scare, and the doctors believing that it may connect to her soy intake as a result of her being a vegetarian. 1:10:43: Ken asks Mark about the impacts of dental x-rays. 1:12:20: Ken comments on how thyroid shields should be used in dental x-rays. 1:12:39: Dawn asks Mark what, if any, prophylactic measures we can take to minimize our risk of thyroid nodules or cancer. 1:13:41: Ken asks Mark to talk about the correlation, and possible causation, between insulin resistance and the development of nodules. 1:15:27: Dawn asks Mark about his thoughts on screening individuals for thyroid cancer, since roughly 50 percent of the population has thyroid nodules. 1:18:21: Ken asks Mark if observation should be the standard care for non-palpable thyroid nodules under ten millimeters. 1:20:07: Dawn asks Mark what the quality of life consequences are for patients who are unnecessarily treated for thyroid cancer. 1:21:38: Dawn asks Mark to talk about the options for people who end up with benign nodules. 1:23:52: Dawn asks Mark if the ionization of salt backfired and contributed to the increase in thyroid nodules, cancer, and autoimmunity. 1:27:20: Ken discusses a New York Times article about doctors reclassifying a thyroid tumor, where they reported that noninvasive follicular thyroid neoplasms with papillary-like nuclear features are no longer considered a type of cancer. Ken asks Mark to discuss this shift in categorization and its consequences. 1:31:46: Dawn asks Mark about his work travelling around the country teaching surgeons and endocrinologists how to use clinical features to minimize unnecessary surgeries and about using ultrasound to risk stratify the nodules. 1:33:15: Ken asks Mark about receiving the 2017 Jack Baskin Endocrine Teaching Award from the American Association of Clinical Endocrinologists. 1:34:20: Dawn asks Mark what else he likes to do in his spare time other than his mountain adventures. 1:35:09: Dawn and Ken thank Mark and sign off.
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May 9, 2017 • 2h

Episode 37: Gary Taubes discusses low-carb diets and sheds light on the hazards of sugar

The front pages of Gary Taubes’ new book on sugar feature a blurb excerpted from the magazine Scientific American: “Taubes is a science journalist’s science journalist who researches topics to the point of obsession – actually, well beyond that point – and never dumbs things down for readers.” Gary’s most recent obsession is documented in “The Case Against Sugar,” a book that argues that increased consumption of sugar over the past 30 to 40 years has led to a diabetes epidemic not only in the United States, but an epidemic that’s now spreading around the world. Episode 37 of STEM-Talk features a more than two-hour conversation with Gary about his latest research as well as a look back at other nutrition and science topics that have dominated Gary’s journalistic investigations since the 1980s. Gary first burst onto the national scene in 2002 with an article in the New York Times Magazine titled, “What If’s It’s All Been a Big Fat Lie?” Gary made the point that Robert Atkins and his high-fat, low-carb diet had a better history and scientific record of helping people lose weight than the low-fat diet that was and remains the centerpiece of the nation’s health policy and food pyramid. The article had an immediate impact. As Michael Pollan pointed out in the introduction of “The Omnivore’s Dilemma,” in the fall of 2002 bread “abruptly disappeared overnight from the American dinner table.” Virtually overnight, wrote Pollan, Americans changed the way they eat. Gary did not set out to become a science journalist. He graduated from Harvard College in 1977 with an S.B. degree in applied physics and went on to earn an M.S. degree in aeronautical engineering from Stanford University. But while at Stanford, he realized he wasn’t that passionate about becoming an aeronautical engineer and decided to enroll in the Columbia School of Journalism to become an investigative reporter. In the ‘80s, Gary became fascinated with flawed science and started writing a series of magazine articles about bad science. That eventually led to a pair of books: “Nobel Dreams” in 1987 and “Bad Science: The Short Life and Weird Times of Cold Fusion” in 1993. After “Bad Science,” Gary turned to nutrition reporting and that resulted in the 2002 article in the New York Times Magazine. He followed up on his research for the article with two books: “Good Calories, Bad Calories” in 2007; and “Why We Get Fat” in 2010. Both books detailed how refined carbohydrates are largely responsible for America’s rising obesity rate and a primary cause of heart disease, diabetes, cancer, and other chronic diseases of the Western diet. His new book, “The Case Against Sugar,” takes this argument a step further and shows how the explosion of sugar consumption and sugar-rich products in the United States has led to a global diabetes epidemic. Dan Barber, author of “The Third Plate,” wrote in a New York Times review of Gary’s book, “Comparing the dangers of inhaling cigarettes with chowing down on candy bars may sound like a false equivalence, but Gary Taubes’s “The Case Against Sugar” will persuade you otherwise. Here is a book on sugar that sugarcoats nothing. The stuff kills.” Below are links to Gary’s books: “The Case Against Sugar” http://amzn.to/2ps8Qbl “Good Calories, Bad Calories” http://amzn.to/2qTwJJ6 “Why We Get Fat” http://amzn.to/2qKuv2u “Bad Science” http://amzn.to/2qTjyrI “Nobel Dreams” http://amzn.to/2pXpRgK Show notes: 4:41: Ken and Dawn welcome Gary to the show and ask him to talk about how a Harvard physics major ended up going to journalism school to become an investigative reporter. 12:53: Dawn asks Gary to tell the story behind his 2002 article in The New York Times Magazine, “What If It’s All Been a Big Fat Lie?” 21:13: Gary shares how his work for “What If It’s All Been a Big Fat Lie?” led to additional research and the book, “Good Calories, Bad Calories.” 31:00: Gary explains how his study of physics gave him a passion for understanding the history of theories, and how that passion has helped him over the years as an investigative reporter. 43:44: Dawn asks Gary to share lessons he learned from the Nutrition Science Initiative (NUSI). 50:06: Ken refers to reports about Kevin Hall, a researcher at NIH, who essentially claims he’s disproven the carbohydrate-insulin hypotheses of obesity, and asks Gary for his thoughts. 1:02:40: Dawn asks Gary if he thinks there are specific populations where it would seem less appropriate to be on a low-carb diet? 1:06:44: Ken asks if elevated LDL-P should be a concern for people on low-carb diets since it’s a concern for people on normal diets. 1:13:17: Gary talks about the history of sugar in America. 1:18:08: Ken asks Gary to provide the background on how diabetes is now becoming a worldwide pandemic. 1:31:31: Gary elaborates on the sugars found in cane sugar and high fructose corn syrup. 1:34:43: Dawn asks Gary, “If you could remove sugar from the modern environment, but keep everything else the same, do you think we would have an obesity epidemic?” 1:37:21: Gary talks about what brain scans reveal about the addictive effects of sugar. 1:41:53: Dawn asks Gary to share the background on a 2015 report in The New York Times that Coca-Cola initially subsidized the Global Energy Balance Network. 1:46:55: Gary talks about the role of the microbiome. 1:51:31: Ken asks Gary to share his thoughts about the possible effects of artificial sweetners. 1:54:33: Dawn asks Gary how his personal dietary approach has changed over the years. 1:59:01: Dawn and Ken thank Gary and sign off.
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Apr 25, 2017 • 1h 8min

Episode 36: Jeff “Skunk” Baxter Discusses His Life in Rock ‘n’ Roll and the U.S. Intelligence Community

In a rare departure from interviews with scientists and engineers, STEM-Talk Host Dawn Kernagis and IHMC Director Ken Ford interview Jeffrey “Skunk” Baxter about his life as a musician and founding member of Steely Dan, and how he went on to become a defense consultant on the Senate Armed Services Committee. The two fields seem completely different, but Baxter explains the similarities between them and talks about how improvising in jazz is a skill that can carry over into defense analytics and tactics. Baxter’s bio includes playing with a number of well-known bands, such as Steely Dan and The Doobie Brothers. As a studio musician for 35 years, Baxter recorded with Donna Summer, Dolly Parton, Ringo Starr and Rod Stewart. He was a record producer for Carl Wilson, the Beach Boys and Stray Cats. He also composed music for movies and television. He has achieved a certain renown in Washington as an advisor and consultant for multiple agencies and defense technology companies. He chaired a Congressional Advisory Board on missile defense and was a senior fellow at the Potomac Institute. Baxter also holds a unique affiliation with IHMC as “senior thinker and raconteur.” He and Ken go way back—to Ken’s own days in the rock ‘n’ roll business, which the two discuss in the interview. Baxter’s IHMC bio is available at http://www.ihmc.us/groups/jbaxter/. More information on him is at https://en.wikipedia.org/wiki/Jeff_Baxter or https://www.facebook.com/skunkbaxter/. In 2009, Baxter gave an IHMC lecture entitled “The Revolution in Intelligence.” https://www.youtube.com/watch?v=1GRkCyvIz70 2:12: Dawn reads a five-star iTunes review. 3:04: Dawn reads Baxter’s bio and introduces Jeff and Ken. 4:38: Baxter talks about musicians who influenced him growing up, from Beethoven and Chopin to Thelonious Monk and Ella Fitzgerald. 5:05: Baxter was five years old when his mother gave him a great gift: “She taught me to read.” 6:04: Baxter read a lot of military history because of his father, who spent five years in active duty and 20 years in the reserves. 7:00: Baxter describes his beginnings as a musician. 8:00: His love of the complexity and improvisational nature of jazz helped prepare him for work in the intelligence community. 10:25: Ken asks Baxter to talk about his days in the ‘70s as a founding member of Steely Dan. 11:15: Baxter shares his insights about studio recordings. 12:27: Baxter notes that a long time ago Ken was very involved in rock ‘n’ roll as an agent who booked and managed bands. 15:30: Baxter talks about Steely Dan and the unsung hero of the band, Roger Nichols, who was the engineer. 17:30: Baxter describes his transition from Steely Dan to The Doobie Brothers. 21:11: Ken comments that the evolution of The Doobie Brothers was remarkable. He asks Baxter about bringing Mike McDonald to the band. 23:20: Dawn asks about Baxter’s transition from full-time rock musician to advisor on missile defense. 23:30: Baxter quips: “A radar is just an electric guitar on steroids.” 25:35: Writing a paper on converting the Aegis system to do theater missile defense on a mobile platform led Baxter to a position as a missile defense consultant on the Senate Armed Services Committee. 26:28: Baxter describes D.C. as “a whole new world to me” filled with “unbelievably talented, smart patriotic men and women.” 27:25: How Baxter used Beethoven, Bach, Jimmy Hendrix and Pink Floyd to teach radar at the National Geospatial Intelligence Agency. 28:50: Edward Teller, the Hungarian-American theoretical physicist, was also a concert pianist. Baxter talks about how he began to realize that more and more physicists he met were also musicians. 29:48: Dawn asks how Baxter was received by the defense community in D.C., given his rock band background. 31:33: Baxter talks about his first ‘brutal” press conference on missile defense (not considered back then by the press as a worthy endeavor). 32:48: Ken adds, “It’s important to be disliked by the right people.” 33:00:  Baxter describes how the people in Washington that he worked with in government, industry, military and intelligence communities were talented and patriotic people and, for the most part, unsung. 33:43: Baxter sees a connection between creativity in music, which involves problem solving in a non-linear approach, and the way talented people in government work. 34:05: Commercial break. 34:47: Baxter describes how the organizational chart of a symphony orchestra looks frighteningly like the government’s organizational chart. 37:00: The organization of a jazz quintet, however, is the opposite of an orchestra. 38:30: Baxter recalls a magazine article by William Nolte, who teaches intelligence at the University of Maryland, that made a case for teaching analysts to improvise the same way musicians do. 40:15: Baxter talks about how Pachelbel’s Canon has the same chord pattern as “Let It Be Me” by the Everly Brothers, or “When a Man Loves a Woman” by Percy Sledge. 43:25: Dawn asks about war games and the role of improvisation in what might happen next. 43:45: Baxter says war games are table-top exercises where there is a blue team (good guys) and red team (bad guys), a white team (overseers of the game) and various other teams. 45:48: In terrorism, Baxter says, “the improvisational part is important because terrorists don’t have the weapons, capabilities or resources, so they have to improvise.” 47:00: Dawn asks about the transition from analog to digital recording in the music industry back in the 1980s, and how it parallels with the evolution of defense technology. 49:28: Dawn reminds Baxter about his 2009 IHMC lecture that addressed ways to improve the U.S. intelligence gathering. 51:43: Baxter says it’s amazing how quickly the intelligence community has caught on to new technologies and leveraged them. 52:10: Ken notes this is in contrast to a time when Baxter once compared the name of the Steely Dan album “Pretzel Logic” to some aspects of the intelligence community. 52:30: Baxter describes how the electron is now the horse of the 21st century. 52:54: Dawn reminds Baxter that he once said the U.S. beat the Soviet Union because of our soft power (culture). Dawn asks if the U.S. can still play that card in places that are trained to reject U.S. culture. 53:11: Baxter recalls playing concerts in the Soviet Union where every song was illegal, yet thousands of people in the audience knew the lyrics, which is why he believes music is a way to bring people and entities together. 54:55: Baxter describes how missile defense as well as blue jeans, French fries and Elvis Presley helped bring down the Soviet Union. 55:42: Baxter explains how the British saved rock ‘n’ roll. 56:26: Baxter stresses the cultural influence of the U.S. and raves about Japanese rock bands. He also notes that Tito Puente won the Latin salsa competition several years in a row with an all-Japanese band. 58:22: Baxter has been working on a solo recording project for more than 15 years, which he says has been on his bucket list. 58:58: Baxter talks about doing jingles for Lays potato chips, Budweiser and Ford. 1:01:21: Ken mentions that Baxter scored the music for the popular animated TV show “King of the Hill.” 1:002:06: Ken asks Baxter about a 1968 meeting with Richard “Paco” Zimmer, a legendary concert promoter and road manager. 1:05:32: Dawn thanks Jeff for being a guest on STEM-Talk. 1:06:31: Ken says “this interview was especially fun for me; and it stimulated a lot of great memories.” 1:06:55: Dawn and Ken sign off.
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Apr 11, 2017 • 1h 58min

Episode 35: Stuart McGill explains the mechanics of back pain and the secrets to a healthy spine

Back pain has become the world’s leading cause of disability. Stuart McGill has been at the forefront of non-surgical approaches to addressing back pain for many years. His 2015 book “Back Mechanic: The Secrets to a Healthy Spine Your Doctor Isn’t Telling You” is a wonderfully accessible account of his methods and perspectives. McGill spent 30 years as a professor of spine biomechanics at the University of Waterloo in Canada. His laboratory has become a renowned destination for everyday people as well as Olympic and professional athletes from around the world who are struggling with back pain. He is the author of more than 300 scientific publications and 3 textbooks that address issues such as lumbar spine function and injury mechanisms, patient assessment, corrective exercise prescription, and performance training. McGill also consults for many medical management groups, governments, corporations, legal firms, and elite sports teams. He has won numerous awards, including the prestigious Volvo Bioengineering Award for Low Back Pain Research. He released his landmark text, “Low Back Disorders: Evidence-Based Prevention and Rehabilitation,” in 2002. It changed the way coaches, bodybuilders, athletes and non-athletes approached core training. His new book, “Back Mechanic,” is written for a lay audience and addresses common misperceptions about back pain. It also provides a step-by-step guide of the McGill Method to fix back pain. Backfitpro.com is a web site also geared for a lay audience and is dedicated to providing access to evidence-based information and products that assist in preventing and rehabilitating back pain. Products featured on the website have been tested in McGill’s lab at the University of Waterloo. McGill and his staff have also produced a video, “The Ultimate Back: Enhancing Performance,” that synthesizes McGill’s approaches for avoiding back injury and enhancing athletic and physical performance. It is available for purchase on Vimeo. 4:23: Stuart talks about how he was more interested in becoming a plumber than a scientist until his high school football coach asked him to return to school and earn his high school degree. That led him to college where he met professors who got him excited about mathematics and physics, and eventually the study of spine biomechanics. 7:00: Ken asks Stuart to describe the remarkable research atmosphere Stuart was able to create at the University of Waterloo. 8:08: Stuart explains that he did not go to medical school, but that he learned he had a unique talent of assessing and relating to people with back pain. 11:00: Ken shares his experience of back pain and traveling to Canada to visit Stuart as a patient, which prompts Stuart to describe his process of assessing people. 14:53: Dawn asks Stuart to talk about his motivation for writing “The Back Mechanic.” 19:53: Although back pain is the world’s leading cause of disability, Dawn asks Stuart why back pain is underappreciated by so many people in the medical community. 22:04: Stuart explains some of the most mechanisms for back injury and ways to prevent them. 26:22: Ken asks Stuart to talk about a study he did several years ago on firefighters with the Pensacola Fire Department. 30:36: Stuart talks about how heavy weightlifting will probably shorten the careers of modern golfers like Rory Mcllroy, and how the great golfers of old who had wonderful long careers – Arnold Palmer, Jack Nicklaus, Gary Player – weren’t weightlifters. 33:53: Stuart talks about the great strikers in mixed martial arts and the UFC are the leaner ones who can unleash muscle. The same is true of the great sprinters, the great golfers, and the great home run hitters, who are the ones who can create a very brief muscle power pulse, and let it go. 34:33: Dawn asks Stuart about reports that the rate of back surgery in the U.S. is five times higher than in other developed countries. 39:31: Stuart provides an overview of the how to about a self-assessment of pain triggers. 46:29: Dawn asks Stuart to explain the McGill method to fixing back pain. 55:03: Ken asks about the technique of power breathing and the implications for spinal disability. 57:15: Ken mentions that he and Stuart are fans of kettlebells, and that power breathing is what a a person does when swinging a kettlebell. Ken asks Stuart to talk about the exercises that he sees as most beneficial with kettlebells.  Ken and Stuart discuss the relative benefits of kettlebell swings, farmer’s walks, and bottoms-up carries. 1:06:49: Stuart talks about measuring competitors in the World’s Strongest Man competition, the NFL, heavyweight UFC fighters, and then asks Ken to guess who had the strongest core Stuart had ever measured. Ken says it was probably a kettlebell dude like Pavel. Stuart confirms that yes it was Pavel Tsatsouline. 1:10:29: Dawn asks if it is true the spine is weaker and more vulnerable to injuries in the morning. 1:14:30: Stuart talks about sciatica, which is usually caused by narrowing of the discs and a little bit of arthritic activity in the vertebra. 1:18:35: Stuart talks about what he describes as silly stretches and exercises, which includes sit-ups and crunches. 1:21:19: Ken asks Stuart to run through the McGill Big Three exercises for spinal stability. 1:30:41: In American training culture, Stuart says there’s too much emphasis on time under the bar, and not enough emphasis on pushing heavy stuff around. He goes on to explain how pulling a slid is a tremendously strengthening and athletically enhancing activity. 1:37:35: Ken talks about friends who’ve sustained back injuries, and points out that was often after they had joined certain training programs focused on Olympic style lifts with high reps. She asks Stuart if he is seeing increased number of spinal injuries with the increased popularity of those type of training programs? 1:43:38: Dawns asks if there’s a direct correlation between back pain or injury and a person’s ability to brace. 1:45:29: Ken asks Stuart to comment on a 2016 study showing that taken as a whole young men today have much less grip strength than their fathers. 1:50:39: Stuart talks about the kinds of back injuries that are associated with sex and ways to mitigate spinal pain associated with sex. 1:52:02: Stuart talks about how his lab was the first to measure orgasm. 1:55:16: Ken and Dawn thank Stuart and sign off. Visit backfitpro.com to learn more about the approaches and back pain exercises that can rehabilitate and prevent spine injury.
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Mar 28, 2017 • 1h 24min

Episode 34: Jim Stray-Gundersen explains how blood flow restriction training builds muscle and improves performance

Dr. Jim Stray-Gundersen discusses blood flow restriction training, its effectiveness for muscle growth and recovery, and its benefits for seniors. The podcast also covers his background in science and his work with Olympians, as well as the mission of the USA Athletic Trust.
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Mar 14, 2017 • 1h 34min

Episode 33: Dr. Natalie Batalha talks about exoplanets and the possibility of life in our Milky Way and beyond

Dr. Natalie Batalha’s STEM-Talk interview was so contagious that Dawn Kernagis said it made her dream of returning to school to get a second graduate degree in astronomy. “Hearing Natalie talk about her research had all of us in the STEM-Talk studio buzzing,” said Dawn, the podcast’s co-host. Natalie is an astrophysicist and the project scientist for NASA’s Kepler Mission, a space observatory launched by NASA to discover Earth-sized planets orbiting other stars. She sat down with Dawn and veteran astronaut and IHMC senior research scientist Tom Jones for episode 33 of STEM-Talk. As one of the original co-investigators of the Kepler Mission, Natalie has been a leader in using the telescope to discover exoplanets, which are planets that orbit stars other than our own sun. Natalie has been involved in the Kepler Mission since the proposal stage and has helped identify more than 150,000 stars that are monitored by the telescope. She holds a bachelor’s degree in physics from The University of California Berkeley, and a doctoral degree in astrophysics from UC Santa Cruz. She taught physics and astronomy for 10 years at San Jose State University before joining the Space Sciences Division of the NASA Ames Research Center, which is located in California’s Silicon Valley. In 2011, Natalie received a NASA Public Service Medal for her vision in communicating Kepler’s science to the public, and also for her outstanding leadership in coordinating the Kepler science team. That same year Natalie also headed up the analysis that led to the discovery of Kepler 10b, the first confirmed rocky planet outside our solar system. She joined the leadership team of a new NASA initiative in 2015, which is dedicated to the search for evidence of life beyond our solar system. Called the Nexus for Exoplanet System Science, the program brings together teams from multiple disciplines to understand the diversity of worlds, and which of those exoplanets are most likely to harbor life. As if Dawn and the STEM-Talk gang weren’t excited enough after talking to Natalie about the search for life beyond our solar system, NASA announced about a month after our interview with Natalie that its Spitzer Space Telescope had revealed the first known system of seven Earth-sized planets around a single star. Three of these planets are firmly located in the habitable zone, the area around the parent star where a rocky planet is most likely to have liquid water. According to a NASA press release in February, the discovery sets a new record for greatest number of habitable-zone planets found around a single star outside our solar system. All of these seven planets could have liquid water – key to life as we know it – under the right atmospheric conditions, but the chances are highest with the three in the habitable zone. 0:30: Dawn welcomes Ken Ford, IHMC founder and director as well as the chairman of the Double Secret Selection Committee that chooses guests who appear on STEM-Talk. Dawn and Ken then talk about Natalie’s background as an astrophysicist. 4:35: Dawn welcomes her co-host for this episode of STEM-Talk, Tom Jones, and they begin the interview by asking Natalie how she became interested in astronomy. 8:03: Natalie talks about how as an undergrad at Berkeley she met a post-doctoral researcher from Brazil who later became her husband. As a result, she ended up doing her post-doctoral work in Rio de Janeiro. 15:47: Dawn asks Natalie to describe the history of the Kepler mission. 19:00: Tom asks Natalie to describe the difficulty of trying to detect a distant planet. 21:34: Natalie describes how long the Kepler telescope has been in space and provides a summary of its findings. 25:30: Natalie talks about lava worlds, which have oceans larger than the Pacific Ocean, but they’re made of lava, which is why scientists call them lava worlds. 27:30: Dawn asks Natalie about the discovery of Kepler 10b, which was the identification of the first rocky planet outside of our own solar system. 32:30: Natalie describes how the host star that Kepler 10b orbits is almost exactly like Earth’s sun, except that it’s about 8 billion to 11 billion years old as opposed to our sun which is four and a half billion years old. 36:30: Dawn reads a quote that describes the discovery of Kepler 10lb as one of the most profound scientific discoveries in human history and asks Natalie to talk about that. 39:00: Tom asks Natalie to provide statistics on the kinds of planets that the Kepler mission is finding. 42:30: Natalie talks about planets in the Goldilocks Zone. 44:35: Break that features Ken talking about STEM-Talk, an educational service of the Florida Institute for Human and Machine Cognition, a not-for-profit research lab pioneering groundbreaking technologies, in that leveraging and extending human cognition, perception, locomotion, and resilience. 45:00: Tom comments that Kepler must have detected anomalies over the years, and asks if they occur frequently and what might cause these anomalies. 47:30: Natalie describes one of the most extreme examples of an anomaly, which is a star known as Tabby’s Star, or Boyajian’s Star. 51:30: Natalie talks about micro-lensing, which is a technique used to detect exoplanets. 53:00: Natalie gives an overview of the W First Mission, which is expected to launch in mid-2020s. 59:00: Dawn asks how many scientists are involved in analyzing Kepler’s findings and how the findings are confirmed. 1:00:30: Dawn asks how long the Kepler Mission will continue. 1:04:30: Natalie talks about plans to follow up on the Kepler Mission once its operations shut down. 1:07:00: Natalie talks about the Transiting Exoplanet Survey Satellite, which is a transit photometry mission that’s complementary to Kepler. 1:10:30: Tom asks Natalie to talk about the likelihood of habitable planets throughout the Milky Way. 1:12:30: Natalie says there are 10 to 20 billion potentially habitable Earth-sized planets in the galaxy. 1:16:00 Dawn asks Natalie for her thoughts about the need for society to prioritize learning about possible other planets that can support life. 1:20:00: Natalie talks about how the process of exploration and the act of pursuing knowledge changes us as a species and directly influences our quality of life on Earth. 1;23:30: Dawn asks Natalie about Pascal Lee and the SETI Institute, also known as the Search for Extraterrestrial Intelligence Institute. 1:24:02: Tom mentions that he’s fascinated by the idea of rogue planets and asks Natalie if they’re real. 1:27:00: Dawn mentions that Ken often comments how astronomers have the coolest scientific jargon, which includes terms like red dwarf stars, gravity waves, gas giants and galactic cannibalism. 1:27:30: When Dawn asks Natalie what she does for fun outside of searching for planets, Natalie talks about growing grapes and making wine with her father. 1:30:00: Natalie ends the interview by encouraging young people to do what they love and to find what gives meaning to their life. 1:33:00: Dawn and Ken sign off.
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Feb 28, 2017 • 1h 22min

Episode 32: Dr. Claire Fraser explains how our gut microbes improve our health, prevent disease and even play a role in our mental health

Women who are pregnant often talk how careful they are about what they eat and drink. They’re careful, points out Dr. Claire Fraser, because they’re feeding their baby. “Well, we should all think about diet in the same way that pregnant women do,” says Fraser. “Everything we put into our mouths, we’re either feeding or not feeding our gut microbes … And it’s important we keep our gut microbes happy.” Fraser is a pioneer and global leader in genomic medicine, a branch of molecular biology that focuses on the genome. In episode 32 of STEM-Talk, Fraser sits down with host Dawn Kernagis and IHMC founder Ken Ford to explain why we should all pay more attention to our guts, which is the home of more than 100 trillion bacteria. An endowed professor at the University of Maryland School of Medicine, Fraser is a founder and director of Maryland’s Institute for Genome Sciences. From 1998 to 2007, she was the director of the Institute for Genomic Research in Rockville, Maryland, and led teams that sequenced the genomes of several microbial organisms, including important human and animal pathogens. In 1995, she became the first person to map the complete genetic code of a free-living organism, Haemophilus Influenza, the bacterium that causes lower respiratory tract infections and meningitis in infants and young children. This discovery forever changed microbiology and launched a new field of study, microbial genomics. During this time, she and her team also sequenced the bacteria behind syphilis and Lyme disease, and eventually the first plant genome and the first human-pathogenic parasite. She even helped identify the source of a deadly 2001 anthrax attack in one of the biggest investigations conducted by U.S. law enforcement. Research into the benefits of gut bacteria has exploded around the world in the past decade.  In this STEM-Talk episode, Fraser explains the role these microbes play in improving health, preventing disease, and keeping us mentally sharp. She even shares how her diet has changed since she started studying the gut microbiome. Fraser also talks about working with the FBI during the 2001 antrhax attacks and her early work in microbiology that led to the first mapping of a free-living organism’s complete genetic code. Her recent lecture at IHMC, titled “The Human Gut Microbiome in Health and Disease,” can be viewed at ihmc.us/lectures. If you’re interested in learning more about the gut microbiome, Fraser in her lecture recommended “The Good Gut: Taking Control of Your Weight, Your Mood, and Your Long-term Health” by Stanford University scientists Justin and Erica Sonnenburg. 1:36: Dawn reads the five-star iTunes review titled “Intellectually Stimulating.” 2:28: Dawn and Ken provide a summary of Claire’s background and research, pointing out that she has authored more than 320 scientific publications, edited three books, and has served on committees of the National Science Foundation, Department of Energy, and National Institutes of Health. 4:13: Dawn welcomes Claire to STEM-Talk. 4:27: Claire talks about growing up in a suburb of Boston and taking her first biology course as a freshman in high school, which set her on a path toward a career in science. 5:37: Dawn asks Claire what led her to study microbiology. 6:53: Ken points out that there are more microbes on a person’s hand than there are people in the world. He asks Claire to give listeners a short intro into “Microbiome 101.” 9:34: Claire talks about the role of Lactobacillus rhamnosus GG (LGG), a strain of bacteria that is part of many popular probiotic products and has a reputation as a helpful microbe. 12:00: Ken asks Claire to expand upon the potential of probiotics and their usage in human beings. 14:56: Dawn points out that Claire is internationally known for her role in genome sequencing and asks what led Claire to establish the Institute of Genomics at Maryland. 18:02: Claire talks about her involvement in the first genome sequencing and where the technology stands today. 22:39: Dawn follows up with a question about how the evolution of sequencing technology has changed the way we monitor the spread of pathogens. 29:26: Claire talks about some of the new sequencing technology on the horizon. 32:02: Ken asks Claire to explain the kind of data-analysis challenges that this new technology is creating. 34:29: Claire describes her experience working on the anthrax attacks in 2001, which at the time was one of the biggest investigations conducted by U.S. law enforcement. 41:39: Dawn asks Claire about the effects of antibiotics on the gut. 47:00: Commercial break: STEM-Talk is an educational service of the Florida Institute for Human and Machine Cognition, a not-for-profit research lab pioneering ground-breaking technologies aimed at leveraging human cognition, perception, locomotion and resilience. 47:25: Fraser talks about the early science of fecal transplants. 50:04: Ken asks Claire about the role of the microbiome in obesity and chronic diseases like diabetes. 52:38: Dawn asks what kinds of solutions there are against antibiotic-resistant strains. 57:15: Ken talks about increasing evidence of a connection between the gut and brain, and asks Claire to talk about what she has learned about the gut-brain connection. 1:02:47: Claire talks about preliminary research she and her colleagues at Maryland are doing on traumatic brain injury and the microbiome. 1:05:49: Dawn asks Claire to explain how diet affects the microbiome. 1:12:05: Ken points out that dietary fat has been demonized for several decades and asks Claire what she has learned about fat from a microbiome perspective. 1:15:27: Dawn asks Claire if her research into the gut has changed the way she eats. 1:18:48: The podcast ends with Dawn and Ken asking Claire to talk about her hobby of making wine.
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Feb 14, 2017 • 49min

Episode 31: Dr. Michael Turner, who coined the phrase ‘dark energy,’ talks about the deepest issues in cosmology

Dr. Michael Turner makes a “big bang” in the world of theoretical cosmology. Translation: He’s an expert on the universe—what it’s made of, what’s in its future, and how it came to be. Turner is the Rauner Distinguished Service Professor and Director of the Kavli Institute for Cosmological Physics at the University of Chicago. From 2003 until 2006, was Assistant Director for Mathematical and Physical Sciences for the National Science Foundation. He is the recipient of numerous awards and prizes, and he is a Fellow of the American Association for the Advancement of Science (AAAS). Michael Turner and Vera Rubben, who recently passed away. Turner is most well-known for having coined the phrase “dark energy” in 1998, which he calls “very, very mysterious stuff.” Thought to comprise 70 percent of the universe, dark energy is responsible for both the expansion of the universe and the increasing speed at which that expansion is occurring. Another five percent of the universe is atoms, and the remaining twenty-five percent is “dark matter”—what Turner calls “the cosmic infrastructure of the universe.” The universe, he adds, has largely “been a battle between the two dark titans: dark energy and dark matter.” “He [Turner] is able to explain the deepest issues in cosmology with a rare clarity and elegance,” says IHMC Director Ken Ford. “His research focuses on the earliest moments of creation.” With Chicago cosmologist Rocky Kolb, Turner co-wrote the well-known book “The Early Universe.” More information on Turner can be found here: https://kicp.uchicago.edu/people/profile/michael_turner.html and here: https://en.wikipedia.org/wiki/Michael_Turner_(cosmologist). Turner’s 2011 IHMC lecture, “The Dark Side of the Universe,” can be viewed here: . Turner was also a guest on STEM-Talk for an earlier episode for his interview on the discovery of gravitational waves. Turner is interviewed by regular STEM-Talk host Dawn Kernagis and guest host Tom Jones, a veteran NASA astronaut and senior research scientist at IHMC. 00:37: Ken calls Dr. Michael Turner “exactly the right guy to talk to about dark energy and dark matter. After all, he coined the phrase dark energy. He is able to explain deepest issues in cosmology with a rare clarity and elegance.” 1:04: Ken pays tribute to Vera Rubin, who passed away on Christmas Day. She confirmed the existence of dark matter and transformed modern physics and astronomy. 2:24: Ken asks for feedback on STEM-Talk and reads 5-star iTunes review from BobRXUF: “With all of the garbage we are bombarded with, listening to STEM-Talk reminds me that there is higher intelligence, the hope for mankind.” 3:35: Dawn and Ken introduce Michael and talk about his background. 4:17: Dawn and Tom welcome Michael to STEM-Talk. 4:39: Tom asks Michael to give listeners the big picture about the structure of our universe and explain how we stumbled upon the phenomenon called dark matter and dark energy? 5:14: Michael explains that a half of one percent of the universe is in the form of stars. The other 99.5 percent is dark. 6:29: Michael talks about how dark matter matter provides the cosmic infrastructure of the universe. 7:45: “Our universe,” says Michael, “has really been a battle between the two dark titans: dark energy and dark matter.” 9:49: Michael explains that’s it’s the stars that give off energy and it’s the atoms we’re made of. “We’re the tip of the iceberg. We’re the special stuff.” 10:52: “Michael talks about producing dark matter particles at the Large Hadron Collider (LHC) in Geneva, Switzerland, the world’s most powerful particle accelerator. 11:25: Tom asks Michael what was the original evidence for dark matter and dark energy and who were the people who made that discovery? 13:20: Michael describes how Vera Rubin, a scientist working at the Department of Terrestrial Magnetism at the Carnegie Institution of Washington, was able to confirm dark matter at work in our own galaxy. 15:06: Tom asks if it’s dark matter that holds things together and makes the clock, the universe, tick? 17:37: Michael explains how Fritz Zwicky and Vera Rubin went about building empirical evidence for dark matter. 19:40: Michael talks about research into “neutralinos,” particles that scientists speculate are left over from the Big Bang. “We’re in the midst of this detective story.” 21:24: Tom asks if the facilities and equipment exist to solve the mystery of the neutralinos and the dark-matter particle? 24:31: Commercial break. 24:55: Dawn wonders if our understanding of dark matter and dark energy continues to advance, what future applications might arise from this knowledge? 25:21: Michael explains that if scientists are able to verify the existence of the neutralino, “it would be the first evidence of the super string theory, which unifies all the forces—a very, very bold theory that says there may be additional dimensions in space-time.” 27:20: In continuing to answer Dawn’s question, Michael says, “If history is any guide, any time we understand nature a little better, there will be spin-offs and practical applications that change and improve the way we live.” 27:43: Tom asks Michael to talk about dark energy and the continuous expansion of the universe. 28:54: Michael shares how two teams discovered in 1998 that rather than slowing down, the expansion of the universe is speeding up, suggesting it’s back to the drawing board on the ultimate fate of the universe. 30:18: Michael talks about what he describes as the most profound mystery in all of science: that gravity can be repulsive rather than attractive. 32:48: Michael refers to a theory that could prove to be even grander than Einstein’s. This new theory says that “as the universe thins out, after expanding for 15 billion years, it starts to speed up. 35:27: Tom asks about Congressional funding for the National Science Foundation research and Turner explains that almost every country on earth is grappling with funding allocations for science. 42:22: Michael talks about the James Webb Space Telescope (JWST), which he describes as big and bold and the kind of project that only the U.S. can do. 43:17: When Dawn asks Michael what led him to become a cosmologist, he talks about how great high school teachers led him into science. 43:51: Michael encourages young people to pursue careers in science. “Just about every challenge that our country and our planet have involves science…trying to understand the secrets of nature and solve the mysteries of mankind are really, really exciting. The career opportunities are good.” 44:41: Michael describes the rewarding nature of his career. “I get to think about the mysteries of the universe. I get to think about how the universe began and how it will end. That’s a pretty good job to have.” 46:3: Tom talks about getting his first telescope when he was 12 years old and how that was a gateway into science. 47:19: Dawn recaps the “mind-boggling statistics” Turner shared in the podcast, staring with 99.5 percent of our universe is dark. 47:38: Ken talks about the great turn of phrases Michael used during the podcast, such as when Michael referred to the evolution of the universe as a “battle between two dark titans.” 48:01 Dawn and Ken sign off.  

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