Big Picture Science

Your daily mucus output is most impressive. Teaspoons or measuring cups can’t capture its entire volume. Find out how much your body churns out and why you can’t live without the viscous stuff. But slime in general is remarkable. Whether coating the bellies of slithery creatures, sleeking the surface of aquatic plants, or dripping from your nose, its protective qualities make it one of the great inventions of biology. Join us as we venture to the land of ooze! Guests: Christopher Viney - Professor of materials science and engineering at the University of California, Merced Katharina Ribbeck - Bioengineer at MIT Anna Rose Hopkins – Chef and partner at Hank and Bean in Los Angeles Ruth Kassinger - author of “Slime: How Algae Created Us, Plague Us, and Just Might Save Us” Learn more about your ad choices. Visit megaphone.fm/adchoices

What’s the difference between a bird call and the sound of a pile driver? Not much, when you’re close to the loudest bird ever. Find out when it pays to be noisy and when noise can worsen your health. Just about everyone eventually suffers some hearing loss, but that’s not merely aging. It’s an ailment we inflict on ourselves. Hear how a team in New York City has put sensors throughout the city to catalog noise sources, hoping to tame the tumult. And can underwater speakers blasting the sounds of a healthy reef bring life back to dead patches of the Great Barrier Reef? Guests: Mark Cartwright – Research Assistant Professor at New York University’s Department of Computer Science and Engineering Charles Mydlarz – Research Assistant Professor at New York University’s Center for Urban Science and Progress (CUSP) and the Music and Audio Research Lab (MARL) David Owen – Staff writer at The New Yorker, and author of Volume Control: Hearing in a Deafening World Jeff Podos – Professor in the Department of Bi

Get ready for compassionate computers that feel your pain, share your joy, and generally get where you’re coming from. Computers that can tell by your voice whether you’re pumped up or feeling down, or sense changes in heart rate, skin, or muscle tension to determine your mood. Empathetic electronics that you can relate to. But wait a minute – we don’t always relate to other humans. Our behavior can be impulsive and even self-sabotaging – our emotions are often conflicted and irrational.  We cry when we’re happy. Frown when we’re pensive. A suite of factors, much of them out of our control, govern how we behave, from genes to hormones to childhood experience.  One study says that all it takes for a defendant to receive a harsher sentence is a reduction in the presiding judge’s blood sugar. So grab a cookie, and find out how the heck we can build computers that understand us anyway.  Guests: Rosalind Picard – Professor at the MIT Media Lab and co-founder of the companies Affectiva and Empatica.  Robert Sap

You are your brain. But what happens when your brain changes for the worse – either by physical injury or experience? Are you still responsible for your actions? We hear how the case of a New York man charged with murder was one of the first to introduce neuroscience as evidence in court. Plus, how technology hooks us – a young man so addicted to video games, he lacked social skills, or even a desire to eat. Find out how technology designers conspire against his digital detox. Also, even if your brain is intact and your only task is choosing a sock color, are you really in control? How your unconscious directs even mundane behavior … and how you can outwit it.  Guests: Kevin Davis – Author of The Brain Defense: Murder in Manhattan and the Dawn of Neuroscience in America’s Courtrooms Hilarie Cash – Co-founder and chief clinical officer of reSTART, an internet addiction recovery program Adam Alter – Assistant professor of marketing and psychology at New York University, Stern School of Business, and auth

Do we still need doctors? There are umpteen alternative sources of medical advice, including endless and heartfelt health tips from people without medical degrees. Frankly, self-diagnosis with a health app is easier and cheaper than a trip to a clinic.  Since we’re urged to be our own health advocate and seek second opinions, why not ask Alexa or consult with a celebrity about what ails us? Find out if you can trust these alternative medical advice platforms. Plus, lessons from an AIDS fighter about ignoring the findings of medical science.   And, if AI can diagnose better than an MD, will we stop listening to doctors altogether? It’s our monthly look at critical thinking … but don’t take our word for it! Guests: Katherine Foley – Science and health reporter at Quartz, and author of the article “Alexa is a Terrible Doctor” Paul Offit – Professor of pediatrics at the Children’s Hospital of Philadelphia and the Perlman School of Medicine at the University of Pennsylvania, and author of “Bad Advice: Or Why C

The stress of the holidays can make you want to hide under the covers with a warm cup of cocoa. From gift buying to family gatherings, the holidays can feel like being inside a pressure cooker. But don’t despair! Science can help make the holidays a little brighter, from some gift-giving tips from our animal friends to embracing pessimism before a challenging social event to stopping that annoying merry melody on repeat in your head. Guests: Adam South – Research assistant professor at the Cummings School of Veterinary Medicine at Tufts University Mitch Ratcliffe – CEO and publisher of Earth911 Julie Norem – Psychology professor at Wellesley College and author of “The Positive Power of Negative Thinking” Elizabeth Margulis – Music professor at Princeton University and author of “On Repeat: How Music Plays the Mind” Steve Ilardi – Clinical psychology associate professor at the University of Kansas. Read his paper on the effects of sugar here. Learn more about your ad choices. Visit megaphone.fm/a

Why create more landfill? Perhaps you should resist the urge to toss those old sneakers, the broken ceiling fan, or last year’s smart phone. Instead, repurpose them! Global junk entrepreneurs are leading the way in turning trash to treasure, while right-to-repair advocates fight for legislation that would give you a decent shot at fixing your own electronic devices.  And, if you toss food scraps down the drain as you cook, are you contributing to a “fatberg” horror in the sewer? Guests: John Love – Synthetic biologist at the University of Exeter Adam Minter – Author of Secondhand: Travels in the New Global Garage Sale Amanda Preske – Chemist and the owner of Circuit Breaker Labs Nathan Proctor – National campaign director for S. Public Interest Research Group – (PIRGS) Right to Repair campaign Kyle Wiens – CEO of I-Fixit, an Internet repair community Learn more about your ad choices. Visit megaphone.fm/adchoices

(repeat) We all may retreat to our protective shells, but evolution has perfected the calcite variety to give some critters permanent defense against predators. So why did squids and octopuses lose their shells? Find out what these cephalopods gained by giving up the shell game. Plus why Chesapeake Bay oyster shells are shells of their former selves. What explains the absence of the dinner-plate sized oysters of 500,000 years ago, and how conservation paleobiology is probing deep time for strategies to bring back these monster mollusks. Also, was the Earth once encased in a giant, continental shell? A new theory of plate tectonics. Land ho! Guests: Rowan Lockwood – Conservation paleobiologist at the College of William and Mary.  Al Tanner – Ph.D. student in paleobiology at the University of Bristol, U.K. Mike Brown – Professor of Geology, University of Maryland Learn more about your ad choices. Visit megaphone.fm/adchoices

(repeat) Fir tree needles embedded in carpet are a holiday headache. Why not decorate a genetically-modified, needle-retaining tree instead? It’s just another way that science is relevant to the holidays. We have more. How about science experiments on fruitcake? There’s a competition that includes launching it with a pneumatic device, running a heavy electric current though it, or blasting it with a blowtorch. Meanwhile, physics provides insight into those tricky how-does-he-do-it questions about Santa’s delivery rounds.   Finally, step away from the relatives and consider the implications of the winter solstice.  Enjoy a better holiday through science! Guests: Jenna Gallas – Special Event Coordinator, Manitou Springs Chamber of Congress, Colorado Laura Kramer – Manager of Science Conductors, Science Museum of Virginia, Richmond Lilian Matallana – Research Associate, Department of Forestry and Environmental Resources, North Carolina State University, Raleigh Ben Orlin – Math teacher, and author of “M

Psychics may not be able to predict the future or sense your thoughts. Nonetheless, they rake in hundreds of millions of dollars every year. But the harm from pseudoscience can go far beyond your wallet – especially when it promotes unscientific treatments for serious disease. Find out what alarming discovery led one naturopath to quit her practice and why scientific ignorance is not bliss.  It’s our regular look at critical thinking, but don’t take our word for it. Guests: Robert Palmer – Member of the Guerilla Skeptics on the Wikipedia editing team and columnist for the Skeptical Inquirer on-line magazine Lee McIntyre – Research fellow at the Center for Philosophy and History of Science at Boston University and lecturer on ethics at Harvard Extension School Britt Marie Hermes – Former naturopath doctor; now doctoral student in evolutionary genetics at the University of Kiel, Germany   Learn more about your ad choices. Visit megaphone.fm/adchoices

A new vaccine may help turn Ebola into a disease we can prevent, and a new drug may make it one we can cure. But the political crisis in the Democratic Republic of Congo has fueled violence against health workers and Ebola treatment centers. Find out why context matters in the efforts to stop Ebola, what new drugs and vaccines are on the horizon, and whether the world is prepared for the next infectious pandemic. Even if Ebola’s threat is diminishing, what about the next pandemic? Is the world prepared? Guests: Richard Preston – Journalist and author of “Crisis in the Red Zone: The Story of the Deadliest Ebola Outbreak in History.” Yap Boum – Regional representative for Africa for Epicentre, the research arm of Médecins sans Frontières (Doctors Without Borders) in Cameroon. Amy Maxmen – Senior reporter, Nature.  Her most recent piece is "Behind the Front Lines of the Ebola Wars." Learn more about your ad choices. Visit megaphone.fm/adchoices

(repeat) 400 years ago, some ideas about the cosmos were too scandalous to mention. When the Dominican friar Giordano Bruno suggested that planets existed outside our Solar System, the Catholic Inquisition had him arrested, jailed, and burned at the stake for heresy. Today, we have evidence of thousands of planets orbiting other stars. Our discovery of extrasolar planets has dramatically changed ideas about the possibility for life elsewhere in the universe.  Modern theories about the existence of the ghostly particles called neutrinos or of collapsed stars with unfathomable gravity (black holes), while similarly incendiary, didn’t prompt arrest, of course. Neutrinos and black holes were arresting ideas because they came decades before we had the means to prove their existence. Hear about scientific ideas that came before their time and why extrasolar planets, neutrinos, and black holes are now found on the frontiers of astronomical research. Guests: Alberto Martínez – Professor of history, University of Te

Do you have a hard-to-answer question? The Summit, Sierra, Trinity, Frontier, and Aurora supercomputers are built to tackle it. Summit tops the petaflop heap – at least for now. But Frontier and Aurora are catching up as they take aim at a new performance benchmark called exascale.   So why do we need all this processing power? From climate modeling to personalized medicine, find out why the super-est computers are necessary to answer our biggest questions. But is the dark horse candidate, quantum computing, destined to leave classical computing in the dust? Guests: Katherine Riley - Director of Science, Argonne National Laboratory Jack Wells - Director of Science, Oak Ridge National Laboratory National Center for Computational Sciences Katie Bethea - Communications Team Lead, Oak Ridge Leadership Computing Facility, Oak Ridge National Laboratory Jeffrey Hawkins – Technologist and neuroscientist. Co-founder of Palm, Handspring and Numenta Eleanor Rieffel - Mathematician, NASA Ames Research Center,

(repeat) Two heads may be better than one. But what about three or more? A new study shows that chimpanzees excel at complex tasks when they work in groups, and their accumulated knowledge can even be passed from one generation to the next.  But group-think also can be maladaptive. When humans rely on knowledge that they assume other people possess, they can become less than rational. Find out why one cognitive scientist says that individual thinking is a myth. Most of your decisions are made in groups, and most derive from emotion, not rationality. Also, why we know far less than we think we do. For example, most people will say they understand how an everyday object like a zipper works, but draw a blank when asked to explain it.  Plus, why we have a biological drive to categorize people as “us” or “them,” and how we can override it.   Guests:  Steven Sloman - Professor of cognitive linguistics and psychological sciences at Brown University and editor-in-chief of the journal, Cognition Robert Sapolsky 

For two Swiss astronomers, it’s “Stockholm, here we come.” Their first-ever discovery of a planet orbiting another star has been awarded the most prestigious prize in science. Find out how their exoplanet discovery led to 4,000 more and how that changes the odds of finding life beyond Earth. Also, the Nobel committee is not alone in finding distant worlds inspirational: a musician is translating their orbital signatures into sound. Guests: Roy Gould - Biophysicist and researcher at the Harvard-Smithsonian Center for Astrophysics. Author of “Universe in Creation” Jeffrey Smith - Data scientist and a principal investigator for TESS at the SETI Institute David Ibbett - Composer and director of the Multiverse Concert Series Learn more about your ad choices. Visit megaphone.fm/adchoices

(repeat) Solid materials get all the production credit. Don’t get us wrong, we depend on their strength and firmness for bridges, bones, and bento boxes. But liquids do us a solid, too. Their free-flowing properties drive the Earth’s magnetic field, inspire a new generation of smart electronics, and make biology possible. But the weird thing is, they elude clear definition. Is tar a liquid or a solid? What about peanut butter? In this episode: A romp through a cascade of liquids with a materials scientist who is both admiring and confounded by their properties; how Earth’s molten iron core is making the magnetic north pole high-tail it to Siberia; blood as your body’s information superhighway; and how a spittlebug can convert 200 times its body weight in urine into a cozy, bubble fortress. Guests: Mark Miodownik – Professor of Materials and Society, University College, London, and author of “Liquid rules: The Delightful and Dangerous Substances that Flow Through Our Lives” Arnaud Chulliat – Geophysicist,

We can’t say we weren’t warned. More than 75 years ago, bacteriologist Rene Dubos cautioned that misuse of antibiotics could breed drug-resistant bacteria – and he has been proved prescient. In this episode: the rise of superbugs, why we ignored the warnings about them, how some are enlisting an old therapy to fight back, and whether we’ll heed history’s lessons in the face of a future pandemic. Plus, a weird unforeseen effect of antibiotics being investigated at the Body Farm.  Guests: Fred Turek - Director of the Center for Sleep and Circadian Biology, Department of Neurobology, Northwestern University Jennifer DeBruyn - Microbiologist at the University of Tennessee, who also works at the Anthropology Research Facility, a.k.a. the Body Farm   Steffanie Strathdee - Associate Dean of Global Health Sciences at the University of California, San Diego, and co-author (with Tom Patterson) of  “The Perfect Predator: A Scientist’s Race to Save Her Husband from a Deadly Superbug” Tom Patterson - Professor o

The stone heads on Easter Island are an enduring mystery: why were they built and why were they abandoned and destroyed? The old ideas about cultural collapse are yielding to new ones based on careful investigation on the ground - but also from above. What surprising explanations have we found and are we off base to think that ancient societies such as the Easter Islanders or the classical Egyptians were, in the end, failures? Can what we learn from these histories help predict which societies will survive? Guests: James Grant Peterkin – Tour guide, resident, and British Honorary Consul on Easter Island Sarah Parcak – Archaeologist, Egyptologist, remote sensing expert, professor at the University of Alabama at Birmingham, and author of Archaeology from Space: How the Future Shapes Our Past Carl Lipo – Anthropologist and professor at Binghamton University, State University of New York Learn more about your ad choices. Visit megaphone.fm/adchoices

(repeat) Modern technology is great, but could we be losing control? As our world becomes more crowded and demands for resources are greater, some people worry about humanity’s uncertain prospects. An eminent cosmologist considers globe-altering developments such as climate change and artificial intelligence. Will we be able to stave off serious threats to our future? There’s also another possible source of danger: our trendy digital aids. We seem all-too-willing to let algorithms classify and define our wants, our needs, and our behavior. Instead of using technology, are we being used by it – to inadvertently become social media’s product?  And while we may be skittish about the increased data our technology collects, one sci-fi writer imagines a future in which information is a pervasive and freely available commodity.  Guests: Martin Rees – Cosmologist, astrophysicist, and Great Britain’s Astronomer Royal. Author of On the Future: Prospects for Humanity. Douglas Rushkoff – Media theorist and professor

(repeat) Your shower pipes are alive. So are your sinks, books, and floorboards. New studies of our homes are revealing just what species live there – in the thousands, from bacteria to flies to millipedes. Meanwhile, life keeps surprising us by popping up in other unexpected places: the deep biosphere houses the majority of the world’s bacteria and the Arctic tundra has kept worms frozen, but alive, for 40,000 years. We embrace the multitude of life living on us, in us, and – as it turns out – in every possible ecological niche. Most of it is harmless, some is beneficial, and it’s all testament to the amazing diversity and adaptability of life. In addition, the hardiest organisms suggest where we might find life beyond Earth. Guests: Rob Dunn – Professor of applied ecology at North Carolina State University and at the Natural History Museum at the University of Copenhagen. Author of “Never Home Alone: From Microbes to Millipedes, Camel Crickets, and Honeybees, the Natural History of Where We Live.” Lynn