Big Picture Science

Obesity, diabetes, heart disease … maybe even Alzheimer’s. Could these modern scourges have a common denominator? Some people believe they do: sugar. But is this accusation warranted? We talk with a journalist who has spent two decades reporting on nutrition science, and while he says there’s still not definitive proof that sugar makes us sick, he can make a strong case for it. Also, how a half-century ago the sugar industry secretly paid Harvard scientists to shift the culprit for heart disease from their product to dietary fat. We hear how the companies borrowed from the playbook of Big Tobacco. So is your sweet tooth a threat to your health? Guests: Gary Taubes– Investigative reporter and the author of The Case Against Sugar. Cristin Kearns– Postdoctoral fellow at the University of California, San Francisco. Naomi Oreskes– Professor of the History of Science and Affiliated Professor of Earth and Planetary Sciences, Harvard University, and the co-author of Merchants of Doubt. Learn more about your a

ENCORE Congratulations, you have a big brain. Evolution was good to Homo sapiens. But make some room on the dais. Research shows that other animals, such as crows, may not look smart, but can solve complex problems.  Meanwhile human engineers are busily developing cogitating machines.  Intelligent entities abound – but are they all capable of actual thought?   Hear how crows fashion tools from new materials and can recognize you by sight. Also, how an IBM computer may one day outthink the engineers who designed it.   Plus, scientists who simulated a rat brain in a computer, neuron-by-neuron, look ahead to modeling the human brain. And, what brain disorders teach us about the brain and our sense of self. Guests: John Marzluff – Professor of wildlife science, University of Washington and the author of In the Company of Crows and Ravens Idan Segev – Professor of computation and neuroscience, Hebrew University, Jerusalem Jeff Welser – Vice president and Lab Director, IBM Almaden Research Center Anil Ana

ENCORE Meet your new relatives.  The fossilized bones of Homo naledi are unique for their sheer number, but they may also be fill a special slot in our ancestry: the first of our genus Homo.  Sporting modern hands and feet but only a tiny brain, this creature may link us and our ape-like ancestors.    Some anthropologists hail the discovery as that of a new hominid species. Not all their colleagues agree. Find out what’s at stake in the debate.  Also, the scientist who helped retrieve the fossils describes her perilous crawl through a cave with only ten inches of elbow room. And a radical theory about what these old bones might mean: could they be from a burial two million years ago? Guests: Marina Elliott  – Paleoanthropologist, University of Witwatersrand, South Africa Carl Ward – Biological anthropologist, University of Missouri John Hawks- Anthropologist, University of Wisconsin, Madison Tim White - Anthropologist, University of California, Berkeley Learn more about your ad choices. Visit megaph

She’s among the most famous missing persons in history. On the eightieth anniversary of Amelia Earhart’s disappearance, mystery still shrouds her fate. What happened during the last leg of her round-the-world trek? Theories abound. Perhaps she ran out of fuel, and plunged into the ocean … or was captured by the Japanese. A non-profit international organization, TIGHAR, suggests she was a castaway, and offers up a new analysis of bones found on a Pacific atoll during the time of the Second World War. Their researchers will return to this possible landing spot to seek more clues this summer. We consider these theories and weigh the new evidence surrounding Earhart’s puzzling last flight. Also, why are we uncomfortable with open-ended mysteries? Guests: Andrew McKenna– Researcher with TIGHAR (The International Group for Historic Aircraft Recovery) Claire Maldarelli– Editor at Popular Science Magazine Andrew Maynard– Director of the Risk Innovation Lab, Arizona State University John Norberg– Journalist a

Face it – your mug is not entirely yours. It’s routinely uploaded to social media pages and captured on CCTV cameras with – and without – your consent. Sophisticated facial recognition technology can identify you and even make links to your personal data. There are few places where you’re safe from scrutiny. Find out how a computer analyzes the geometry of a face and why even identical twins don’t fool its discerning gaze. Proponents say that biometrics are powerful tools to stop crime, but the lack of regulation concerns privacy groups. Do you want to be identified – and your habits tracked – whenever you step outside?  Plus, astronomy meets forensics. How analyzing photos and paintings using weather records, sky charts, and phases of the moon help solve intriguing mysteries, including the history of an iconic V.J. Day photo. Guests: •  Donald Olson – Physicist, astronomer, Texas State University   •  Marios Savvides – Computer engineer, Director, CyLab Biometrics Center, Carnegie Mellon University •  Alva

The light bulb needs changing. Edison’s incandescent bulb, virtually unaltered for more than a century, is now being eclipsed by the LED. The creative applications for these small and efficient devices are endless: on tape, on wallpaper, even in contact lenses. They will set the world aglow. But is a brighter world a better one? Discover the many ingenious applications for LEDs and the brilliance of the 19th century scientist, James Clerk Maxwell, who first discovered just what light is. But both biologists and astronomers are alarmed by the disappearance of dark.  Find out how light pollution is making us and other animals sick and – when was the last time you saw a starry night? Guests: • Ian Ferguson – Engineer, dean of the College of Engineering and Computing, Missouri University of Science and Technology • Jay Neitz – Professor, department of ophthalmology, University of Washington • Martin Hendry - Professor, gravitational astrophysics and cosmology, University of Glasgow • John Barentine  - Program ma

The moon jellyfish has remarkable approach to self-repair. If it loses a limb, it rearranges its remaining body parts to once again become radially symmetric. Humans can’t do that, but a new approach that combines biology with nanotechnology could give our immune systems a boost. Would you drink a beaker of nanobots if they could help you fight cancer? Also, materials science gets into self-healing with a novel concrete that fixes its own cracks.  Plus, why even the most adaptive systems can be stretched to their limit. New research suggests that the oceans will take a millennium to recover from climate change.  Guests: •  Lea Goentoro – Professor of biology, California Institute of Technology •  Michael Abrams - Biologist, California Institute of Technology •  Sarah Moffitt – Paleo-oceanographer, Bodega Marine Laboratory, University of California, Davis •  Mark Miodownik – Materials scientist, director of the Institute of Making, University College, London. Author of “Stuff Matters: Exploring the Marvelous

Shhh. Is someone coming? Okay, we’ll make this quick. There are a lot of scary things going on in the world. Naturally you’re fearful. But sometimes fear has a sister emotion: suspicion. A nagging worry about what’s really going on. You know, the stuff they aren’t telling you. Don’t share this, but we have evidence that both our fear response and our tendency to believe conspiracy theories are evolutionarily adaptive.  A sociologist who studies fear tells us why we’re addicted to its thrill when we control the situation, and how the media exploit our fear of losing control to keep us on edge. Plus, we examine some alien “cover-ups” and discover why it’s not just the tinfoil hat crowd that falls for outrageous plots. It’s Skeptic Check …. but you didn’t hear it from us! Guests: Margee Kerr – Sociologist who studies fear, author of Scream: Chilling Adventures in the Science of Fear Rob Brotherton – Psychologist, adjunct assistant professor at Barnard College, and author of Suspicious Minds: Why We Believe

What you can’t see may astound you. The largest unexplored region of Earth is the ocean. Beneath its churning surface, oceanographers have recently discovered the largest volcano in the world – perhaps in the solar system. Find out what is known – and yet to be discovered – about the marine life of the abyss, and how a fish called the bristlemouth has grabbed the crown for “most numerous vertebrate on Earth” from the chicken. Plus, the menace of America’s Cascadia fault, which has the potential to unleash a devastating magnitude 9 earthquake.  Follow Dr. Sager’s voyage back to Tamu Massif in Fall 2015. Guests  • Bruce Robison – Deep sea biologist, Monterey Bay Aquarium Research Institute • William Sager – Marine geophysicist, Earth and Atmospheric Sciences, University of Houston • Chris Goldfinger  - Marine geologist, geophysicist, paleo-seismologist, Oregon State University  Learn more about your ad choices. Visit megaphone.fm/adchoices

Earth may be the cradle of life, but our bodies are filled with materials cooked up billions of years ago in the scorching centers of stars. As Carl Sagan said, “We are all stardust.” We came from space, and some say it is to space we will return. Discover an astronomer’s quest to track down remains of these ancient chemical kitchens. Plus, a scientist who says that it’s in our DNA to explore – and not just the nearby worlds of the solar system, but perhaps far beyond. But would be still be human when we arrive? Hear what biological and cultural changes we might undergo in a multi-generational interstellar voyage. Guests:  •   Timothy Beers – Astronomer, University of Notre Dame •  Chris Impey – Astronomer, University of Arizona, author of Beyond: Our Future in Space •  Cameron Smith – Archaeologist, Portland State University Learn more about your ad choices. Visit megaphone.fm/adchoices

Archaeologists continue to hunt for the city of Atlantis, even though it may never have existed. But, what if it did? Its discovery would change ancient history. Sometimes when we dig around in the past, we can change our understanding of how we got to where we are. We thought we had wrapped up the death of the dinosaurs: blame it on an asteroid. But evidence unearthed in Antarctica and elsewhere suggests the rock from space wasn’t the sole culprit. Also, digging into our genetic past can turn up surprising – and sometimes uncomfortable truths – from ancestral origins to genes that code for disease. But do we always want to know? Guests: •  Mark Adams – author, Meet Me in Atlantis: My Obsessive Quest to Find the Sunken City •  David Morrison – Senior scientist, NASA Ames Research Center •  Peter Ward – Paleontologist, University of Washington, author of A New History of Life: The Radical New Discoveries about the Origins and Evolution of Life on Earth •  Christine Kenneally – Journalist and author

"If it bleeds, it leads” is the tried and true tenet of news. Indeed, headlines are often no more than a long list of moral atrocities. Yet one man argues that we’re living in the most civilized era in history. And he credits this to scientific thought and reason.  Hang on! Our executive function isn’t enough to promote ethical behavior, says a psychologist. The real fuel behind our drive to be good? Anger, compassion, pride: your emotions! But whether or not you’re a pillar of the community, good intentions might all be for naught when future ethical decisions are made by our silicon successors. Get ready for moral machines. Or not. Guests: •  Michael Shermer - Publisher of Skeptic Magazine, author of The Moral Arc: How Science and Reason Lead Humanity Toward Truth, Justice, and Freedom •  David DeSteno – Psychologist, Northeastern University, author of The Truth About Trust •  Colin Allen – Historian, philosopher of science and cognitive science, Indiana University. Co-author of Moral Machines: Teaching

This year’s election is divisive, but one subject enjoys some consensus: science and technology policies are important. So why aren’t the candidates discussing these issues? The answers might surprise you. The organizer of Science Debate, who wants a live debate devoted to science and technology, describes one obstacle to meaningful discussion. He also shares how the candidates responded to probing questions about science.  Communication expert Kathleen Hall Jamieson looks back to the televised debate of Kennedy and Nixon to discern trends that have made productive discussion about science nearly impossible today (it didn’t start out that way!) And, the unique situation in which the man at the top of one political ticket is flat out wrong about science: a physicist describes how Donald Trump’s anti-science position affects the election.  Guests: Shawn Otto - co-founder of sciencedebate.org, and the author of “The War on Science: Who’s Waging It, Why It Matters and What We Can Do About It"   Lawrence Kraus

Are you skeptical? Sure, you raise an eyebrow when some Nigerian prince asks for your bank numbers, or when a breakfast cereal claims that it will turn your kid into a professional athlete overnight. But what do you really know about the benefits of organic milk? Or the power of whitening ingredients in your toothpaste? How credible is what you read on Twitter? Today, information overwhelms us, and the need to keep our skeptical wits about us has never been greater. We follow Seth around as he faces the daily onslaught of hype and hokum. It’s Skeptic Check, our monthly look at critical thinking … but don’t take our word for it! Guests:  •  Steven Novella  – Assistant professor of neurology at Yale University School of Medicine and host of the “Skeptic’s Guide to the Universe” podcast •  Guy P. Harrison – journalist and author. His latest book, Good Thinking: What You Need to Know to be Smarter, Safer, Wealthier, and Wiser, will be in bookstores in October 2015.  •  Andrew Maynard – Professor in the School

Darwinian evolution is adaptive and slow … millennia can go by before a species changes very much. But with the tools of genetic engineering we can now make radical changes in just one generation. By removing genes or inserting new ones, we can give an organism radically different traits and behaviors. We are taking evolution into our own hands. It all began with the domestication of plants and animals, which one science writer says created civilization. Today, as humans tinker with their own genome, is it possible we will produce Homo sapiens 2.0? Also, what happens to those species who can’t control their destiny? How climate change is forcing the biggest genetic reshuffling in recorded history. Guests: •  Richard Francis – Science writer, author of Domesticated: Evolution in a Man-Made World •  Juan Enriquez – Academic, businessman, author, founding director of the Life Sciences Project, Harvard Business School, managing director, Excel Venture Management, and author of Evolving Ourselves: How Unnatur

Everyone knows that a big rock did in the dinosaurs, but smaller asteroids are millions of times more common and can also make a violent impact.  Yet unlike the bigger asteroids, we’re not tracking them. Find out what we’d need to keep an eye on the size of space rocks such as that which exploded over Chelyabinsk, Russia.  And how an asteroid whizzed by Earth in late August 2016, only hours after it had been spotted. Asteroids are the one natural disaster we can defend against, but an economist explains why humans are reluctant to invest in protection against “low probability, high impact” threats.  Also, how to authenticate that chunk of asteroid that you found in a field and NASA’s first ever return mission to an asteroid. It plans to bring some fresh samples back to Earth.  Guests: Peter Jenniskens – Senior Research Scientist, SETI Institute David Morrison – Senior Scientist of the Solar System Exploration Research Virtual Institute, NASA Ames Research Center Alex Tabarrok – Economist, George Mason U

You’re a private person. But as long as you’re on-line and have skin and hair, you’re shedding little bits of data and DNA everywhere you go. Find out how that personal information – whether or not it’s used against you – is no longer solely your own. Are your private thoughts next? A security expert shares stories of ingenious computer hacking … a forensic scientist develops tools to create a mug shot based on a snippet of DNA … and from the frontiers of neuroscience: mind reading may no longer be the stuff of sketchy psychics. Guests: •  Marc Goodman – Global security advisor, founder, Future Crimes Institute, author of Future Crimes: Everything Is Connected, Everyone Is Vulnerable and What We Can Do About It •  Susan Walsh – Forensic geneticist, Indiana University – Purdue University in Indianapolis •  Marvin Chun – Psychologist, Yale University Learn more about your ad choices. Visit megaphone.fm/adchoices

When astronaut Gene Cernan stepped off the moon in 1972, he didn’t think he’d be the last human ever to touch its surface. But no one’s been back. Hear astronaut Cernan’s reaction to being the last man on the moon, the reasons why President Kennedy launched the Apollo program, and why Americans haven’t returned. Now other countries – and companies – are vying for a bigger piece of the space pie. Find out who – or what – will be visiting and even profiting. Will the moon become an important place to make money?   Plus, the moon landing was a great step for “a man,” and “men not machines” make space history. But what about women? More than a dozen were qualified for space flight in the early 1960s. Hear from one of these original “Mercury 13,” and find out why NASA grounded them.  Guests: Gene Cernan – Retired American naval officer, former NASA Astronaut.  John Logsdon – Professor emeritus, Space Policy Institute, George Washington University Al Hallonquist – Aerospace historian Robert Richards – Foun

There are few enduring truths, but one is that no one gets out of life alive. What’s less certain is what comes next. Does everything stop with death, or are we transported to another plane of existence? First-hand accounts of people who claim to have visited heaven are offered as proof of an afterlife. Now the author of one bestseller admits that his story was fabricated. We’ll look at the genre of “heaven tourism” to see if it has anything to say about the possible existence of the hereafter, and why the idea of an afterlife seriously influences how we live our lives on Earth. Also, a neurologist describes what is going on in the brain during near-death and other out-of-body experiences. It’s Skeptic Check, our monthly look at critical thinking … but don’t take our word for it! Guests: •  Ben Radford – Paranormal investigator, research fellow at the Committee for Skeptical Inquiry and deputy editor of the Skeptical Inquirer, and author of the Discovery News article, “Why People Believed Boy’s ‘Visit to He

We all try to fight it: the inexorable march of time. The fountain of youth doesn’t exist, and all those wrinkle creams can’t help. But modern science is giving us new weapons in the fight against aging. So how far are we willing to go? Hear when aging begins, a summary of the latest biotech research, and how a lab full of youthful worms might help humans stay healthy. Also, a geneticist who takes a radical approach: collect the DNA that codes for longevity and restructure our genome. He finds inspiration – and perhaps genes as well – in the bi-centenarian bowhead whale. But what if age really is mind over matter? A psychologist’s extraordinary thought experiment with septuagenarian men turns back the clock 20 years. Will it work on diseases such as cancer as well?  Guests: Gordon Lithgow – Geneticist, Buck Institute for Research on Aging, Novato, California Manish Chamoli – Post-doctoral researcher, Buck Institute for Research on Aging George Church – Professor of Genetics, Harvard Medical School, aut