NSF’s Discovery Files Podcast

In the United States there are over 95 million heads of cattle, but their known history stretches beyond the farms and cowboys of the Wild West back into the galleons of Spanish colonists. Nicolas Delsol, a postdoctoral associate at the Florida Museum of Natural History joins to explain how he traced their arrival in the Americas.

Airborne Phased Array Radar will provide a generational leap in severe storm and climate research. Wen-Chau Lee, APAR chief scientist and senior scientist at National Center for Atmospheric Research Earth Observing Laboratory, joins to discuss radar use in storms, improving modeling and why sometimes it’s better to collect data from inside of a storm.

After an incident as a young water polo player, Nicholas Cecchi began investigating brain injury. We’ll hear about how an early study resulted in a rule change, approaches to analyzing the severity of hits and impacts in sports, and how he used an NSF Graduate Research Fellowship to develop liquid shock absorbers for football helmets in the Camarillo Lab at Stanford University.

Yuzhang Li, assistant professor in chemical and biomolecular engineering at UCLA, is working to create the next generation of batteries. We'll learn about why lithium is volatile and how knowing the true shape of lithium will impact the development of safer and more powerful batteries.

Cryptofauna are creatures that live hidden among microhabitats. Our guest is Paul Sikkel, a research professor at the University of Miami’s Rosenstiel School of Marine, Atmospheric and Earth Science who has discovered two species of Gnathiid isopods. We’ll hear about these creatures' life cycles, their role in the marine food web, and why Sikkel named them after musicians Bob Marley and Jimmy Buffett.

William Anderegg, director of the Wilkes Center for Climate Science & Policy and associate professor in The University of Utah School of Biological Sciences, joins to discuss how forest ecosystems are reacting to climate change. He is a 2023 recipient of the Alan T. Waterman Award, the nation's highest honor for early-career scientists and engineers.

Extreme weather events are increasing every year and wildfires are getting worse. We speak with Phil Higuera, a professor of fire ecology at the University of Montana, to explore the causes and consequences of wildfires and how they are impacting people and the environment.

A major initiative at the NSF, is broadening participation in STEM. Our guest today, Natalie S. King, a science educator at Georgia State University founded the I AM STEM program in 2017 which has served over 2,000 K-12 children and their families across 22 U.S. States, Canada, and the Caribbean. Her work was recently recognized with the Alan T. Waterman Award, the nation’s highest honor for early-career scientists and engineers.

A new integrated HPV DNA screening platform could transform cervical cancer screening around the globe. We'll speak with Kathryn Kundrod, who helped develop the test as an NSF Graduate Research Fellowship recipient at Rice University, to learn about the challenges with cancer screening and how researchers are working to prevent it.

A new polymer-based material with electrical and magnetic properties that can autonomously heal itself has been demonstrated by NSF-supported chemical engineers at Stanford University. We speak with co-author Christopher B. Cooper to learn more about this innovative work being done at the Stanford Nano Shared Facilities.

Thanks to the efforts of the NSF-Supported Laser Interferometer Gravitational-Wave Observatory and NANOGrav Physics Frontiers Center scientists have confirmed the existence of gravitational waves. We are joined by Kip Thorne, to hear about his role in the detection of gravitational waves, his experience being awarded a Nobel Prize and how time travel might be possible.

Thanks to the efforts of the U.S. National Science Foundation's NANOGrav Physics Frontiers Center a new milestone in gravitational wave detection can be revealed. We speak with Stephen Taylor of Vanderbilt University; Maura McLaughlin of West Virginia University; and Xavier Siemens of Oregon State University, to learn more about their breakthrough.

From black holes and fast repeating bursts to James Webb Space Telescope breakthroughs and the search for extraterrestrial life, space has been a hot topic this past year. Joe Pesce, an astrophysicist with the U.S. National Science Foundation, joins us to talk about all things space in a special episode recorded live.

The University of Washington's Center for Research and Education on Accessible Technology and Experiences (CREATE) is working towards a world with fewer problems and more solutions for people with disabilities. We are joined by CREATE collaborators Jennifer Mankoff and Heather Feldner to hear about their projects and the difference they are making.

During the Cold War, a U.S. military installation called Camp Century was carved out of the ice sheet in Greenland. One of the camp’s projects was drilling a near mile-long ice core, which in the subsequent decades went missing. We are joined by Paul Bierman, a geologist and professor at the University of Vermont, who will tell us about the secretive base, where the missing ice core was found and the staggering discovery he found at the bottom of the core.

Shwetak Patel leads the University of Washington Ubiquitous Computing Lab, which develops innovative sensing systems for health, sustainability and novel interactions. He will tell us about his experience bringing devices to market, mentoring the next generation and where sensors are headed next.

Cori Lathan has always had an interest in technology. She has spent her career inventing, founding and running a company, Anthrotronix, and inspiring STEM interest in future generations through robotics. Her recent book, "Inventing the Future: Stories from a Techno Optimist" explores the possibilities of tomorrow through her 20-year career journey. She joins us to discuss some of her inventions, how NSF support has helped her along the way, and her optimism for the future.

Jason Freeman, professor of music and Brian Magerko, professor of digital media at Georgia Tech had an idea for a music-based learning environment to engage students in STEM by coding. EarSketch has gone on to reach over a million users, has been used in more than 5,000 schools in all 50 states and over 180 countries and has collaborated with music partners such as Pharrell, Young Guru, Common and Richard Devine. We'll hear from Jason Freeman, Brian Magerko, and Richard Devine on how it became a success.

The vast wilderness of Antarctica has many secrets, and to reveal some, you must dig down into the subglacial environment. We are joined by Matthew Siegfried and Ryan Venturelli from the Colorado School of Mines to learn about their involvement in SALSA, the Subglacial Antarctic Lakes Scientific Access project.

Horses evolved in North America, but ancient populations died off during the last ice age. We are joined by William Taylor, assistant professor, and curator of archaeology at the University of Colorado Boulder, to learn about how horses impacted the shaping of the American West.

A recurring dramatic trope in film and television relates to the trolley problem, wherein a dilemma arises in which choice must be made to save one or another. We are joined by Joshua Greene, a professor of psychology at Harvard University, who has spent much of his career studying moral judgment and decision-making.

Jooyoung Lee, a doctoral student at Penn State’s College of Information Sciences and Technology, joins us to talk about her research on plagiarism from language models in popular online chatbots.

The landmark first image of a black hole, at the center of the Messier 87 galaxy, has received a makeover with the help of machine learning. Lia Medeiros, an astrophysicist at the Institute for Advanced Study joins to discuss how she used PRIMO to reach the full resolution of the Event Horizon Telescope and what impacts it will have on black hole physics.

Spiros Michalakis is manager of outreach and a staff researcher at Caltech’s Institute for Quantum Information and Matter, an NSF Physics Frontiers Center. He joins us to discuss his role representing the U.S. for World Quantum Day; quantum states as a natural language; the challenges in communicating complex ideas; and where he hopes to see the field go in the future.

In a landmark development for neuroscience, an interdisciplinary team has completed the first full map of an insect brain, revealing synaptic connections and valuable insights into how the brain operates. We are joined by Joshua Vogelstein, associate professor of biomedical engineering at Johns Hopkins University to learn about the obstacles in processing and analyzing big data; the links between animal intelligence, artificial intelligence, and machine learning; and where he’s hoping to take his research in the future.

The NSF Engineering Research Center for Hybrid Autonomous Manufacturing Moving from Evolution to Revolution will accelerate the development and deployment of intelligent, autonomous manufacturing systems, enabling mass customization in local production facilities. We are joined by co-principal investigators Glenn Daehn and Jian Cao, as well as NSF Director Sethuraman Panchanathan, Assistant Director for Engineering Susan Margulies, and ERC Program Director Sarit Bhaduri.

Representation is vital for inspiring the next generation, and the fields of science, technology, engineering, and mathematics are no different. Today we are joined by Karen Marrongelle, the NSF’s chief operating officer to talk about her career in mathematics, leadership in education and efforts being made to bolster the future STEM workforce.

Peggy Giordano has studied cognitive transformation and the dynamics of desistance for many years. Her work at Bowling Green State University in Ohio led to a 2021 Stockholm Prize in Criminology. We’ll hear about her study that follows subjects from adolescence into adulthood looking at social influences on the long-term cessation of violence, including the effects of intimate partner and family dynamics, and what behavioral changes are needed for successful cessation to occur.

The video game and television adaptation, The Last of Us, has created a lot of interest in the parasitic fungi Ophiocordyceps. We're joined by Charissa De Bekker, assistant professor of biology at Utrecht University in the Netherlands, to learn about the different kinds of Cordyceps, her experience studying their parasitic relationship with ants, and the zombie-like behavior that is exhibited as the fungus develops.

NSF's Directorate for Social, Behavioral, and Economic Sciences supports research focused on human behavior and how behavior can be shaped by social, economic, political, cultural, and environmental forces. Two NSF-supported researchers, Abigail Marsh, a professor in the Department of Psychology and the Interdisciplinary Program in Neuroscience at Georgetown University and Joshua Greene, professor of psychology and a member of the Center for Brain Science at Harvard University, join us to discuss altruism. What is it? Are first responders altruistic? Are other creatures capable of altruism? If it's on the internet, is it performative?

With accurate definitions of a seemingly contradictory nature and complex concepts like entanglement and teleportation, the realm of quantum science can get unusual very quickly. But what is quantum? What can you do with it? Do the movies get it right? We set out to answer some of these questions with quantum physicist Spiros Michalakis, a staff researcher and manager of outreach at the Institute for Quantum Information and Matter at Caltech, a U.S. National Science Foundation Physics Frontiers Center.

During Iceland's Viking Age, a volcanic eruption formed a lava tube, which became a cave known as Surtshellir. Fast forward more than a millennium and a researcher from Brown University heard stories of tourists visiting a Viking Era site inside the cave and taking away bones they found there. What does the site tell us about Viking culture, Norse Mythology, and folklore? We'll speak with Kevin P. Smith to hear what he found when he descended into the cave of Surtur.

In elite athletics, competitive advantages can come from the smallest of differences. Track, cycling, baseball, basketball, soccer, football have all been fundamentally impacted by technological developments. Supported in part by NSF, NeuroTrainer has developed a virtual reality program that can impact performance by training the mind. We are joined by founder Jeff Nyquist and CEO Noah Rolland. We further explore scientific technology's revolutionary impact on sport with Rayvon Fouché.

Mentorship plays an essential role in encouraging and inspiring the next generation. Often, mentors are parents, family members or teachers, but anyone can be a mentor. We'll speak with Dr. Sethuraman Panchanathan, the 15th director of the U.S. National Science Foundation, to learn about his experiences with mentorship and his approach to inspiring others. We will also look at the mentor – mentee relationship between NSF Creative Services Division Branch Chief Cori Bassett and AAAS fellow Dr. Sasha Luks-Morgan.

NSF-supported researchers at Princeton University have developed an egg protein-derived aerogel whose unique structure is able to remove both salt and microplastics from water. We speak with Sehmus Ozeden to learn more about how this aerogel was developed, how it might be used and what impact it could have on the food supply.

NSF's Engineering Research Center for Smart Streetscapes will forge livable, safe, and inclusive communities through real-time, hyperlocal technologies for streets and their surroundings. We are joined by Principal Investigator Andrew Smyth and Co-PI Mubarak Shah, as well as NSF Director Sethuraman Panchanathan, Assistant Director Susan Margulies, and Program Manager Sandra Cruz-Pol.

While we are seeing climate change impacts around the world, researchers from the Florida Museum have reported the results of 30 dives tracking the number and diversity of one animal that appears to be doing just fine.

The NSF Engineering Research Center for Advancing Sustainable and Distributed Fertilizer Production will enable resilient and sustainable food production by developing next-generation technology for capturing, recycling and producing decarbonized nitrogen-based fertilizers. We are joined by Principal Investigator Gerardine Botte, Co-PI Odemari Mbuya, as well as NSF Director Sethuraman Panchanathan, Assistant Director Susan Margulies, and Program Manager Mehdi Ferdowsi.

A recent nuclear fusion ignition event at the Lawrence Livermore National Laboratory has made headlines around the world. We are joined by physicists Slava Lukin and Jose Lopez to find out what nuclear fusion is and to learn about plasmas.

The Polar Geospatial Center at the University of Minnesota Twin Cities and the Ohio State University have recently released four more years of image data, creating the most detailed polar region terrain maps ever. Claire Porter, Co-Director at the Polar Geospatial Center joins to tell us exactly what is at the north pole and what we can learn from mapping it.

At North Carolina State University, NSF-supported researchers have developed a swimming soft robot that is four times faster than previous soft robots. Professor Jie Yin joins to explain how they developed the energy efficient model inspired by manta rays.

NSF's Engineering Research Center for Precision Microbiome Engineering will be creating microbiome technologies that address challenges at the interface of human health and the built environment. We are joined by principal investigator Claudia Gunsch, co-PI Joseph Graves, Duke University Dean of Engineering Jerome Lynch, as well as NSF Director Sethuraman Panchanathan, Assistant Director for Engineering Susan Margulies and ERC Program Director Randy Duran.

Kaitlyn Becker was working on her doctorate at Harvard University when she helped develop a soft robotic system that can handle complex objects by using entanglement grasping. She joins to explain how creatures of the sea inspired the robotic gripper and how it might be used in the future.

When you ask a smart device a question, there is a latency in the response due to the processing of your question taking place at a data center. What if you could process that query directly on the device? Researcher Alex Sludds joins to explain a new edge computing architecture.

Gravity in space is at a minimum, providing an ideal environment for studying physics-related properties. Researcher Ingrid Tomac joins us to explain why her work with mudflow is being studied aboard the International Space Station. We are also joined by NSF Program Director Kendra McLauchlan.

The lack of gravity in space provides an ideal environment for studying physics-related properties. To take advantage of this opportunity, an unprecedented seven NSF-supported projects are being sent to the International Space Station. We'll hear from NSF Deputy Division Director William Olbricht and researchers Ranga Narayanan, Jason Livesay, Yangying Zhu, Sushil Bhavnani, Karthekeyan Sridhar, Jing Fan, Chunhui Xu, and Allen Liu on why these experiments are going to space and what they might teach us back home on Earth.

From out in space, high-energy particles bombard Earth and objects in our orbit with radiation that can endanger the lives of astronauts and destroy electronic equipment. Researcher Luca Comisso joins to explain his insights into the turbulent origins of these cosmic rays.

As we move into flu season, virologist Joanna Shisler explains how viruses work and how we may avoid them. Engineer Gerri Botte tells us how she developed a COVID-19 sensor during the height of the pandemic.

The United Nations estimates that more than 400 million tons of plastic is produced each year. A byproduct of this level of use is that plastic waste now contaminates the entire global marine environment. Researcher Bhuvnesh Bharti tells us about his research into microplastics.

The U.S. power grid is the biggest machine in the world, and demand is ever increasing. Professor Anurag Srivastava is working on ways to make the grid more resilient by augmenting operators and optimizing control. We'll hear how. Department of Energy Engineer John Brewer also joins to explain the basics of the U.S. power grid.