Origin Stories

The widely-held idea known as the “obstetrical dilemma” is a hypothesis that explains why babies are so helpless, and why childbirth is so difficult for humans compared to other animals.  The obstetrical dilemma suggests that babies are born early so their big brains can fit through the mother’s pelvis, which can’t get any wider due to our method of bipedal locomotion. This problem, the idea says, is solved by an evolutionary tradeoff that increases risks to pregnant mothers who must struggle to birth bigger and bigger-brained babies through narrow birth canals.   On this episode, Leakey Foundation grantees Dr. Holly Dunsworth and Dr. Anna Warrener describe their search for the evidence behind the obstetrical dilemma and they discuss the importance of the stories we tell about our bodies. Send us your questions! Have a question about human evolution? Something you've always wondered about? We will find a scientist to answer it on a special episode of Origin Stories! There are three ways to submit your question: Leave a voicemail at (707) 788-8582 Visit speakpipe.com/originstories and leave a message Record a voice memo on your phone and email it to us at originstories@leakeyfoundation.org Links The Mermaid's Tale A Most Interesting Problem There is no 'obstetrical dilemma': towards a braver medicine with fewer chilbirth interventions Metabolic hypothesis for human altriciality A Wider Pelvis Does Not Increase Locomotor Cost in Humans, with Implications for the Evolution of Childbirth The obstetrical dilemma hypothesis: there's life in the old dog yet YouTube - Close up video of chimp childbirth The Leakey Foundation Origin Stories is a project of The Leakey Foundation, a nonprofit organization dedicated to funding human origins research and outreach. All donations to support the podcast will be quadruple-matched thanks to Jeanne Newman and the Ann and Gordon Getty Foundation. Visit leakeyfoundation.org/donate and use the notes field let us know your donation is in support of Origin Stories. Thanks Thanks to Lynn and Larry Schafran for sponsoring this episode. We are grateful for their support of The Leakey Foundation and our educational programs. Lunch Break Science Lunch Break Science is The Leakey Foundation's web series featuring short talks and interviews with Leakey Foundation grantees. Episodes stream live on the first and third Thursdays of every month. Sign up for event reminders and watch past episodes at leakeyfoundation.org/live  

Sleep is one of the defining traits of human life. It's also one of the most mysterious. Dr. Horacio de la Iglesia is a neurobiologist who's on a quest to understand how patterns of human sleep evolved. His new research shows an unexpected connection between sleep and the cycles of the moon. Links de la Iglesia Lab Moonstruck Sleep It's not just the pandemic. The moon may be messing with your sleep, too The de la Iglesia Lab Sleep and Homelessness Project Science and Evolution of Sleep | Ask a Biologist Podcast Recommendation: Our Opinions Are Correct  The Leakey Foundation Origin Stories is a project of The Leakey Foundation, a nonprofit organization dedicated to funding human origins research and outreach. All donations to support the podcast will be quadruple-matched thanks to Jeanne Newman and the Ann and Gordon Getty Foundation. Click leakeyfoundation.donorsupport.co/page/originstories to donate!   Lunch Break Science Lunch Break Science is The Leakey Foundation's web series featuring short talks and interviews with Leakey Foundation grantees. Episodes stream live on the first and third Thursdays of every month. Sign up for event reminders and watch past episodes at leakeyfoundation.org/live    

What is it like to study an endangered species like chimpanzees, knowing they may go extinct within your lifetime? Leakey Foundation grantee Dr. Zarin Machanda is a co-director of the Kibale Chimpanzee Project, a long-term field study in Uganda. This study was started by primatologist Richard Wrangham in 1987, and project members have collected daily records of the chimps there ever since. These notes hold the life stories of around 150 chimpanzees, and this long-term data is a powerful way for scientists to understand chimpanzees–and ourselves. The Leakey Foundation Origin Stories is a project of The Leakey Foundation, a nonprofit organization dedicated to funding human origins research and outreach. Lunch Break Science Lunch Break Science is The Leakey Foundation's web series featuring short talks and interviews with Leakey Foundation grantees. Episodes stream live on the first and third Thursdays of every month. Sign up for event reminders and watch past episodes at leakeyfoundation.org/live Links Kibale Chimpanzee Project Dr. Zarin Machanda First Molar Eruption, Weaning, and Life History in Wild Chimpanzees No Grumpy Old Men in the World of Chimps Social selectivity in aging chimpanzees The Kasisi Project Primates and social media   Ku0axA3wNaEL2utrbZjy

Your life story is hidden in your teeth. The days, weeks, years, and stressful events of your life are recorded in tiny timelines that can be read by scientists like Leakey Foundation grantee Dr. Tanya Smith. She and her colleagues used fossil teeth to tell a detailed and intimate story about the lives of two Neanderthal children and the changing world they lived in. Links The Tales Teeth Tell  What teeth can tell about the lives and environments of ancient humans and Neanderthals Wintertime stress, nursing, and lead exposure in Neanderthal children Reconstructing hominin life history Dr. Tanya Smith's website The Leakey Foundation Origin Stories is a project of The Leakey Foundation, a nonprofit organization dedicated to funding human origins research and outreach. Support The Leakey Foundation Support this show and the science we talk about. Become a monthly donor and your donations will be matched by the Ann and Gordon Getty Foundation. leakeyfoundation.org/donate  Lunch Break Science Lunch Break Science is The Leakey Foundation's web series featuring short talks and interviews with Leakey Foundation grantees. Episodes stream live on the first and third Thursdays of every month. leakeyfoundation.org/live

Early prehistorians had little more than stones and bones to work with as they tried to piece together the story of the Neanderthals, but today’s researchers work in ways that early prehistorians could never have imagined. Archaeologist and author Rebecca Wragg Sykes' new book Kindred: Neanderthal Life, Love, Art, and Death synthesizes more than a century of research on Neanderthals – from the first Neanderthal fossil discovered, to the most up to date and cutting edge research - revealing a vivid portrait of one of our most intriguing and misunderstood relatives. Links Kindred: Neanderthal Life, Love, Death, and Art by Rebecca Wragg Sykes Rebecca Wragg Sykes' website Kindred bibliography with 61 pages of Neanderthal research papers Leakey Foundation grantee Carolina Mallol's Neanderthal Fire Project The Leakey Foundation Origin Stories is a project of The Leakey Foundation, a nonprofit organization dedicated to funding human origins research and outreach. Support The Leakey Foundation Support this show and the science we talk about. For the month of February, we are running a campaign in celebration of Charles Darwin’s birthday. 100% of the money we raise will go towards funding research grants, and all donations up to a total of $2,500 will be matched by Leakey Foundation trustee Mike Smith and matched again by the Ann and Gordon Getty Foundation. leakeyfoundation.org/donate  A Most Interesting Problem As part of our Darwin celebration, we’re having a virtual event on Saturday, February 13. “A Most Interesting Problem” celebrates Charles Darwin's contributions to science and explores what Darwin got right and wrong about human evolution - 150 years after the publication of his book The Descent of Man. The speakers will be Jeremey DeSilva, Darwin historian Janet Browne, Brian Hare, Yohannes Haile-Selassie, Augustin Fuentes, Holly Dunsworth, and Ann Gibbons. Visit bit.ly/originsdarwin to get your free tickets. Lunch Break Science Lunch Break Science is The Leakey Foundation's web series featuring short talks and interviews with Leakey Foundation grantees. Episodes stream live on the first and third Thursdays of every month. leakeyfoundation.org/live.

If exercise is healthy, why do so many people avoid doing it? If we're born to be active, why is it so hard to keep your New Year's resolutions about exercise? On this episode, learn about the powerful instincts that cause us to avoid exercise even though we know it’s good for us. Dan Lieberman, author of the new book Exercised: Why Something We Never Evolved to Do Is Healthy and Rewarding, tells the story of how we never evolved to do voluntary physical activity for the sake of health, and helps us think about exercise in a whole new way.  About our guest Daniel Lieberman is a professor of human evolutionary biology at Harvard University, a member of The Leakey Foundation’s Scientific Executive Committee, and a pioneering researcher on the evolution of human physical activity. His research is on how and why the human body looks and functions the way it does. He has long been fascinated by the evolution of the human head but his main focus is currently on the evolution of human physical activity. He is especially interested in how evolutionary approaches to activities such as walking and running, as well as changes to our body’s environments (such as wearing shoes and being physically inactive) can help better prevent and treat musculoskeletal diseases. To address these problems, he integrates experimental biomechanics and physiology in both the laboratory and the field with analyses of the human fossil record. Links Exercised: Why Something We Never Evolved to Do Is Healthy and Rewarding - pre-order at bookshop.org Register for Dan Lieberman's January 5 Leakey Foundation lecture The Leakey Foundation Origin Stories is a project of The Leakey Foundation, a nonprofit organization dedicated to funding human origins research and outreach. Support The Leakey Foundation Support this show and the science we talk about. Donate today and your gift will be matched. leakeyfoundation.org/donate Lunch Break Science Lunch Break Science is The Leakey Foundation's web series featuring short talks and interviews with Leakey Foundation grantees. Episodes stream live on the first and third Thursdays of every month. leakeyfoundation.org/live.

In 2017, Dr. Isaiah Nengo announced the discovery of a 13 million-year-old fossil ape found in Kenya. This remarkable fossil, nicknamed Alesi, was from a time period where there’s a big blank spot in the fossil record of our family tree. Alesi tells us something new about the early evolution of apes and shows what the common ancestor of humans and all the other living apes might have looked like. In this episode, Dr. Nengo tells the story behind the discovery. This episode was originally released in 2017. We're revisiting it now because Isaiah Nengo will be featured on our new web series, Lunch Break Science, on December 3 at 11 am Pacific. He will share updates on his research and exclusive footage of his recent field work in the Turkana Basin. Visit leakeyfoundation.org/live and sign up to receive event reminders. Special thanks to Isaiah Nengo of Stony Brook University and the Turkana Basin Institute, and Ellen Miller of Wake Forest University. The Leakey Foundation Origin Stories is a project of The Leakey Foundation, a nonprofit organization dedicated to funding human origins research and outreach. Support this show and the science we talk about with a tax-deductible donation. Links Click here to see photos of the discovery, along with a 3D animation of the inside of the fossil. New 13 million-year-old infant fossil ape skull sheds light on ape evolution Questions and answers about Alesi Skull secrets of an ancient ape Research article in Nature: New infant cranium from the African Miocene sheds light on ape evolution Credits Produced by: Meredith Johnson and Shuka Kalantari Editor: Julia Barton Sound Design: Katie McMurran Theme Music: Henry Nagle Intern: Yuka Oiwa Additional Music: Tech Toys by Lee Rosevere Can you give us a 5-star rating? If you like the show, please leave us a review or rating on Apple Podcasts. It's the best way to help other people find the show and we really appreciate it.  

Variation in human skin color has fascinated and perplexed people for centuries. As the most visible aspect of human variation, skin color has been used as a basis for classifying people into “races.” In this lecture, Leakey Foundation grantee Dr. Nina Jablonski explains the evolution of human skin color and discusses some of the ways that harmful color-based race concepts have influenced societies and impacted social well-being. Links Nina Jablonski's website Video - "The Evolution and Meaning of Human Skin Color" Skin, A Natural History Skin We Are In Finding Your Roots curriculum and activities Bill Nye's TikTok on Dr. Jablonski's work The American Association of Physical Anthropology's Statement on Race and Racism The Leakey Foundation Origin Stories is a project of The Leakey Foundation, a nonprofit organization dedicated to funding human origins research and outreach. Support The Leakey Foundation Support this show and the science we talk about. Donate today and your gift will be matched. leakeyfoundation.org/donate Lunch Break Science Lunch Break Science is The Leakey Foundation's web series featuring short talks and interviews with Leakey Foundation grantees. Episodes stream live on the first and third Thursdays of every month. leakeyfoundation.org/live. Learn about the evolution of human hair Join The Leakey Foundation's Young Professionals Group on November 19 for an evening with evolutionary biologists Tina Lasisi and Elizabeth Tapanes to learn all about the evolution of human hair. Visit leakeyfoundation.org/ypg for an invitation to the event.

September 30 is International Podcast Day and on this episode, we’re handing things over to producer Lucía Benavides, who sat down with Leakey Foundation grantee María Martinón-Torres for an interview about her life and career. This bonus episode is entirely in Spanish. We’ll be back with an English-language episode in October. Special thanks to Dub and Ginny Crook for sponsoring this episode.  Click here for a transcript of this episode.

Atapuerca is a place that holds the mystery of human evolution in Europe from 1.2 million years ago through recent times. You can find, in one place, the oldest human in Europe, the first murder in the archaeological record, and fossils that tell a range of stories from disturbing and grisly to tender and heartwarming. María Martinón-Torres is a Leakey Foundation grantee who is sometimes called a "detective of the dead" because she pieces together clues to learn about the lives and deaths of the people who once inhabited northern Spain. Special thanks Thanks to María Martinón-Torres for sharing her work. Thanks to Dub and Ginny Crook for sponsoring this episode. Links to learn more The Atapuerca website María Martinón-Torres' website Learn about Atapuerca on efossils.org Unesco World Heritage information Sima del Elefante - The First Hominin of Europe Gran Dolina - Human Meat Just Another Meal for Early Europeans? Sima de los Huesos The Leakey Foundation Origin Stories is a project of The Leakey Foundation, a nonprofit organization dedicated to funding human origins research and outreach. Support The Leakey Foundation We're looking for 20 new monthly "Bedrock Donors." Become a Bedrock Donor today and your monthly gift will be quadruple-matched! Lunch Break Science Lunch Break Science is The Leakey Foundation's online series featuring short talks and interviews with Leakey Foundation grantees. Episodes resume in October but you can watch all of the past episodes on demand at leakeyfoundation.org/live. Credits Host, Writer, Producer: Meredith Johnson Producer: Lucia Benavides Editor: Audrey Quinn Special thanks to Shuka Kalantari Theme Music: Henry Nagle Additional Music: Lee Rosevere "Tech Toys" and music from Blue Dot Sessions. Sponsors Origin Stories is made possible by support from Dub and Virginia Crook, Diana McSherry, Jeanne Newman, Camilla Smith, and donors like you! Get Social We'd love to connect with you on Twitter and Facebook. Please say hi and let us know what you think of the show! If you like the show, please leave us a review or rating on Apple Podcasts or wherever you listen. It's the best way to help other people find the show and we really appreciate it. Call us! We've set up a voicemail line and we'd love to hear from you! Call us at ‪(707)788-8582‬ to let us know how you're doing and if there is anything you'd like to hear on this podcast.