Best Learning Tree Academy Podcasts (2025)

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820: Studying the Molecular Information Cells Use to Move Through Their Environments - Dr. Michelle Starz-Gaiano 36:14

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3d ago36:14

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Dr. Michelle Starz-Gaiano is Professor and Chair of Biological Sciences at the University of Maryland Baltimore County (UMBC). Michelle’s research uses fruit flies to examine how cells in the body go to the right place at the right time. Understanding why and how cells use their genetic information to move through the body is critical because if th…

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819: Making Great Leaps Studying the Ecology and Evolutionary Biology of Tropical Frogs - Dr. Maureen Donnelly 49:41

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Dr. Maureen (Mo) Donnelly is a Professor of Biology and Associate Dean for Graduate Studies in the College of Arts and Sciences at Florida International University (FIU). She is also a Research Associate in the Department of Herpetology at the American Museum of Natural History in New York City. Mo studies amphibians like frogs and toads. These org…

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818: Shining Light on the Exciting Capabilities of Quantum Computing - Dr. Mark Saffman 35:07

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Dr. Mark Saffman is a Professor in the Department of Physics at the University of Wisconsin-Madison. He received is B.Sc. with honors in Applied Physics from the California Institute of Technology. Mark’s research focuses on quantum computing. He and his colleagues are trying to build a new kind of computer called a quantum computer that can solve …

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817: Creating New Cancer Models and Advancing Regenerative Medicine - Dr. Luiz Bertassoni 43:00

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Dr. Luiz E. Bertassoni is the founding director of the Knight Cancer Precision Biofabrication Hub and Professor in the Division of Oncological Sciences at the Knight Cancer Institute, where he is also co-section head for Discovery and Translational Oncology. He is also faculty in the Department of Biomedical Engineering, the Cancer Early Detection …

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816: Deciphering Genetic Variations in Bacteria that Lead to Disease - Dr. Shannon Manning 35:55

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Dr. Shannon Manning is a Michigan State University (MSU) Foundation Associate Professor in the Department of Microbiology and Molecular Genetics. The goal of Shannon’s research is to understand how pathogens (bacteria or viruses) cause disease in people. How likely a person is to get sick may be due to the different types of pathogens they are expo…

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815: Fascinated by the Effects of Material Properties on the Form and Function of Fishes - Dr. Adam Summers 50:02

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Dr. Adam Summers is a Professor in the School of Aquatic and Fisheries Sciences and Department of Biology at the University of Washington, and he conducts research in his lab within the Friday Harbor Laboratories there. With a background in engineering and mathematics, Adam works on applying engineering and physics principles to living systems. He …

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814: Uncovering the Secrets of Ancient Creatures By Studying Fossils and the Fossilization Process - Dr. Sarah Gabbott 51:23

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Dr. Sarah Gabbott is a Professor of Palaeontology in the School of Geography, Geology, and the Environment at the University of Leicester. She is also Director of Green Circle Nature Regeneration CIC, a non-profit organization in the UK, and she is co-author of the recently released book Discarded: How Technofossils Will be Our Ultimate Legacy. As …

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813: Investigating the Impacts of the Gut Microbiome on Immunotherapy Cancer Treatments - Dr. Jennifer Wargo 35:18

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Dr. Jennifer Wargo is an Associate Professor in the Department of Surgical Oncology at The University of Texas MD Anderson Cancer Center and a Stand Up To Cancer researcher. Jennifer is a physician scientist, and this means she splits her time between providing care to patients and doing research to find better ways of treating disease. Specificall…

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European Red List of Trees 13:16

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In this Saturday episode of Talking Trees, we examine the findings of the European Red List of Trees, a landmark IUCN-based assessment revealing that nearly 42% of Europe’s native tree species are threatened with extinction. We discuss: The major threats contributing to this crisis, including invasive species, habitat loss, poor land management, an…

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Arboricultural Academy - Arboriculture in the Czech Republic 9:17

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In this Friday episode of Talking Trees, we turn our attention to the Czech Republic’s Arboristická akademie, a leading platform for education, certification, and outreach in the field of arboriculture. We discuss: The Academy’s role in promoting care for trees in non-forest environments, combining science, practice, and communication Its wide rang…

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TMA - Fungi Determination App 10:10

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In this Thursday episode of Talking Trees, we spotlight a practical digital tool developed by Tim Moya Associates (TMA)—a free mobile app designed to help arborists and tree managers identify wood-decay fungi on trees in the UK. We discuss: How the app simplifies fungi identification through intuitive menus, photos, and information on decay type, h…

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Tree Species Selection for Green Infrastructure 11:34

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In this Wednesday episode of Talking Trees, we explore how thoughtful tree species selection is essential for building resilient green infrastructure in cities facing climate change, soil limitations, and urban stressors. We discuss: Why tree selection should be based on site-specific conditions, including soil compaction, heat exposure, and rootin…

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Friction Hitches in Tree Climbing 19:55

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In this Tuesday episode of Talking Trees, we dive into the world of friction hitches, essential tools for climbers that provide control, safety, and flexibility during ascent and descent in tree work. We discuss: How friction hitches function by gripping the rope under tension while allowing easy adjustment when unloaded Popular hitches like the Pr…

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Heat Resistance of Trees 15:51

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In this Monday episode of Talking Trees, we explore how urban trees respond to rising temperatures and what determines their heat resistance in the face of climate change and the urban heat island effect. We discuss: The physiological and biochemical effects of heat on trees, including impacts on photosynthesis, respiration, and water regulation Me…

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812: Studying the Evolutionary Diversity of Squishy Sea Creatures - Dr. Joseph Ryan 38:00

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Dr. Joseph Ryan is an Assistant Professor of Biology at the Whitney Laboratory for Marine Bioscience at the University of Florida. Joe studies DNA from squishy marine invertebrates like ctenophores (e.g. comb jellies), cnidarians (e.g. jellyfish), tunicates (e.g. sea squirts), and sea cucumbers. His goal is to understand how different types of anim…

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RECAP - CW 19/2025 10:28

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This is your weekly summary of the Talking Trees podcast! 🌱 Monday 156 - Transpiration, Evaporation and Interception We explored three key water-related processes in trees—transpiration, evaporation, and interception—and how they influence tree health, microclimate regulation, and the hydrological cycle. 🧗 Tuesday 157 - Personal Fall Protection Sys…

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Cerambryx cerdo 19:56

2M ago19:56

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In this Saturday episode of Talking Trees, we take a closer look at the Cerambyx cerdo, also known as the great capricorn beetle—a striking and ecologically significant member of the longhorn beetle family. We discuss: Its scientific classification and broad geographic range across Europe, Asia, and North Africa, with historic extinction noted in t…

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Dirk Dujesiefken 16:18

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In this Friday episode of Talking Trees, we pay tribute to one of the most influential figures in modern arboriculture—Prof. Dr. Dirk Dujesiefken. His career has shaped the way we understand, teach, and care for trees in urban environments across Europe. We discuss: His early fascination with nature protection and the urban role of trees, which led…

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Acustic Tomography 29:30

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In this Thursday episode of Talking Trees, we delve into the use of acoustic tomography—specifically the PiCUS Sonic Tomograph and TreeTronic systems—for diagnosing hidden internal decay in trees. We discuss: How sound waves and electrical resistance are used to map internal wood structure without damaging the tree The key steps in setting up, cali…

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Dynamic Tree Cabling 15:59

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In this Wednesday episode of Talking Trees, we explore the principles and practices of dynamic tree cabling, a system designed to enhance tree stability while allowing natural movement and growth. We discuss: The difference between dynamic and static cabling systems, and when dynamic solutions are most appropriate Key installation principles such a…

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Personal Fall Protection Systems 12:03

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In this Tuesday episode of Talking Trees, we dive into the essentials of Personal Fall Protection Systems (PFPS) used in modern arboricultural climbing and aerial rescue operations. We discuss: The two primary climbing techniques: Moving Rope Technique (MRT), where the rope moves over an anchor point, and Stationary Rope Technique (SRT), with a fix…

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Transpiration, Evaporation and Interception 12:45

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In this Monday episode of Talking Trees, we explore three essential water-related processes—transpiration, evaporation, and interception—that shape how trees interact with their environment and regulate the water cycle. We discuss: Transpiration, the movement of water from roots through the plant and its release as vapor from leaf surfaces, driven …

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811: Investigating Clams with Photosynthetic Algae, Parasites in Mud Shrimp, and Other Species Interactions that Shape Evolution - Dr. Jingchun Li 42:59

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Dr. Jingchun Li is an Associate Professor in the Department of Ecology and Evolutionary Biology at the University of Colorado Boulder, and she is the Curator of Invertebrates at CU Boulder’s Museum of Natural History. She is also a Packard Foundation Fellow and a National Geographic Explorer. Jingchun studies how different species interact with eac…

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RECAP - CW 18/2025 10:50

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This is your weekly summary of the Talking Trees podcast – diving deep into tree biology, gear, policy, soil, and society. Here’s what we explored this week: 🌱 Monday 149 - Osmosis and Root Function We kicked off the week by examining how osmosis and root structure support water uptake and nutrient transport. From soil macropores to seaweed-based b…

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Social Study Protect Biodiversity 13:04

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In this Saturday episode of Talking Trees, we turn our attention to the human dimension of biodiversity protection, exploring how public attitudes shape conservation outcomes and the role arboriculture plays in supporting a healthy social-ecological system. We discuss: A national study from Spain revealing that the general population holds a strong…

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Soil Microbiom and Trees 14:37

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In this Friday episode of Talking Trees, we explore the soil microbiome as a critical but often overlooked driver of tree health, biodiversity, and ecosystem resilience. Far beyond just a substrate for roots, soil is a living, dynamic system influencing the entire tree environment. We discuss: How soil microbial communities support nutrient cycling…

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Phytopthora 13:25

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In this Thursday episode of Talking Trees, we focus on the global threat posed by Phytophthora species, aggressive plant pathogens that have devastated forests, gardens, and natural landscapes worldwide. We discuss: The biology and life cycle of Phytophthora fungi-like organisms, including their ability to spread through water, soil, and infected p…

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Common Sense Risk Management of Trees 16:10

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In this Wednesday episode of Talking Trees, we explore the newly updated guidance from the National Tree Safety Group (NTSG) on applying common sense risk management to trees. Balancing public safety with the immense environmental and social benefits of trees is at the heart of this approach. We discuss: Why the overall risk from trees is very low,…

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Tree Climbing Spikes 10:23

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Tree climbing spikes, also known as spurs, are essential tools for specific arboricultural operations but come with important considerations. In this Tuesday episode of Talking Trees, we explore the different types of climbing spurs, focusing on materials like steel and aluminum, and gaff lengths suited for tree, pole, or hybrid work. We discuss: H…

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Osmosis and Root Function 14:21

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In this Monday episode of Talking Trees, we explore the vital processes of osmosis and root function that underpin healthy tree growth and establishment. Understanding how roots interact with their environment is crucial for arborists and anyone managing young or mature trees. We discuss: How osmotic processes drive water uptake and nutrient transp…

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810: Studying Social Behavior, Reproduction, and Health in Female-Dominant Species - Dr. Christine Drea 42:15

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Dr. Christine Drea is the Earl D. McLean Professor of Evolutionary Anthropology, as well as Professor in the Department of Biology, the University Program in Ecology, and the Duke Institute for Brain Sciences at Duke University. Research in Christine’s lab examines animal behavior from an integrative perspective. She and her colleagues are investig…

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RECAP - CW 17/2025 15:35

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This is your weekly summary of the Talking Trees podcast! 🌱 Monday 142 - Easter and Tree Traditions We explored the symbolic connections between Easter celebrations and trees, highlighting the Tree of Life, Slavic spring rituals, and the deep-rooted relationship between seasonal traditions and nature. 🧗 Tuesday 143 - Ely’s London Plane – Earth Day …

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ASCA - Arbor Day 11:34

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In this special Arbor Day episode of Talking Trees, we shine a light on the role of consulting arborists and the importance of the American Society of Consulting Arborists (ASCA) in shaping the arboricultural profession. We discuss: The differences between arborists, certified arborists, and consulting arborists, focusing on training, experience, a…

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Ely`s London Plane - Earth Day 9:58

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In this special Earth Day episode of Talking Trees, we spotlight one of the UK’s most iconic trees: the Great London Plane of Ely. Celebrated as the largest of its kind in the country, this remarkable specimen stands not only as a botanical giant, but also as a symbol of heritage, science, and community engagement. We discuss: The historic and cult…

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Easter and Tree Traditions 14:12

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In this Monday holiday episode of Talking Trees, we explore the rich symbolic and cultural connections between Easter celebrations and trees. From the ancient Tree of Life to Slavic rituals involving willow branches, this episode weaves together mythology, art, and seasonal tradition. We discuss: The Tree of Life as a universal symbol of regenerati…

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809: Bright Researcher Studying Exoplanets and their Stars and Developing New Astrophysics Technology - Dr. Kevin France 33:53

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Dr. Kevin France is an Assistant Professor in the Department for Astrophysical and Planetary Sciences as well as an investigator within the Laboratory for Atmospheric and Space Physics at the University of Colorado, Boulder. Kevin’s research focuses on improving our understanding of planetary systems outside of our own solar system. His research he…

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RECAP - CW 16/2025 10:25

3M ago10:25

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This is your weekly summary of the Talking Trees podcast – exploring everything from microbiomes to medicine. Here's what we uncovered this week: 🌱 Monday 135 - Street Trees and Soil Microbiota We opened the week underground, exploring how microbial life in the rhizosphere supports urban street trees. Bacteria, fungi, and endophytes form biochemica…

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International Society of Arboriculture = ISA 13:07

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In this Friday episode of Talking Trees, we celebrate the legacy and ongoing impact of the International Society of Arboriculture (ISA)—the world’s leading organization dedicated to advancing the profession of arboriculture. We explore: The history of ISA, which celebrated its 100th anniversary in 2024 The evolution of its scientific journal from t…

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808: Unraveling How Mitochondria Can Be Used to Reverse Aging and Treat Age-Related Diseases - Dr. Keshav Singh 51:31

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Dr. Keshav K. Singh is the Joy and Bill Harbert Endowed Chair and Professor of Genetics, Dermatology and Pathology at the University of Alabama at Birmingham. He is also the founding Editor-in-Chief of the Mitochondrion Journal. In addition, Keshav is the founder and Chief Scientific Officer of the company Yuva Biosciences. Research in Keshav’s lab…

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Mark Johnston - Lifelong Arborist 19:55

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In this Friday episode of Talking Trees, we celebrate the remarkable career of Dr. Mark Johnston, a pioneer in urban forestry whose life’s work has shaped tree care across the UK and beyond. Drawing from his autobiographical reflections in the 2024 TREES e-book, this episode offers a personal and professional journey through decades of dedication t…

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807: Conducting Cool Science on Conservation in Arctic and Subarctic Ecosystems - Dr. Luise Hermanutz 57:00

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Dr. Luise Hermanutz is a Professor in the Department of Biology at Memorial University in Canada. Her work is dedicated to solving the puzzle of how organisms survive and adapt in their environments. She is interested in how plants and animals interact and how that shapes the world around us. Most of Luise's work focuses on northern boreal forests …

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RECAP - CW 14/2025 14:14

3M ago14:14

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This is your weekly summary of the Talking Trees podcast – bringing you expert insights and practical knowledge from Monday to Saturday. Here’s what we covered this week: 🌱 Monday 121 - Function of Assimilation Apparatus We explored the role of the assimilation apparatus – leaves and needles – in photosynthesis and stress adaptation. Learn how tree…

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David Lonsdale 19:39

3M ago19:39

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In this episode, listeners meet renowned arboricultural expert David Lonsdale. David shares his inspiring journey and extensive experience, discussing his insights on tree pathology, tree risk assessment, and management strategies that promote healthy urban forests. He provides practical knowledge blended with anecdotes from his long career, highli…

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806: Creating Two-Dimensional Material Structures to Investigate Novel Quantum States of Matter - Dr. Jia "Leo" Lee 30:07

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Dr. Jia "Leo" Li is an Associate Professor of Physics at Brown University. He is a condensed matter experimental physicist, and his research involves stacking different layers of two-dimensional (2D) material together to discover new electronic properties that could revolutionize future technology, including the next generation of computers and ele…

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RECAP - CW 13/2025 11:23

3M ago11:23

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This is your weekly summary of the Talking Trees podcast. Let’s revisit the fascinating episodes we explored this week: 🌱 Monday 114 - Pulleys and Friction Rings We kicked off the week with a look at the essential climbing gear—pulleys and friction rings. We discussed their functions, differences, and best use cases in tree work. 🧗 Tuesday 115 - St…

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Alex Shigo 9:01

3M ago9:01

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In this episode of Talking Trees, we pay tribute to Dr. Alex Shigo, the father of modern arboriculture. His groundbreaking research on tree biology, particularly the CODIT model (Compartmentalization of Decay in Trees), revolutionized how arborists understand and care for trees. We discuss: His pioneering work at the U.S. Forest Service The shift f…

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805: Creating Cell-Free Gene Editing On A Chip For Cancer Diagnosis and Treatment - Dr. Eric Kmiec 44:34

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Dr. Eric Kmiec is Director of the Gene Editing Institute of the Helen F. Graham Cancer and Research Institute at Christiana Care Health System. He also holds faculty appointments at the University of Delaware and the Wistar Institute. Eric and his colleagues are working to develop new ways to treat cancer by destroying the genes that cause cancer c…

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RECAP - CW 12/2025 9:37

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Welcome to this week's recap of Talking Trees, where we summarize the key insights from Monday to Saturday. Let’s dive into what we covered this week! 🌱 Monday 107 - Hirons - Applied Tree Biology We explored the essential principles of tree biology as outlined in Dr. Andrew Hirons' book Applied Tree Biology. Topics included tree anatomy, root funct…

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Singapore Biodiversity Index - International Day of Forests 15:50

4M ago15:50

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In this special episode of Talking Trees, we highlight the International Day of Forests and its significance in promoting global awareness of forest conservation. Established by the United Nations, this annual event encourages efforts to protect and restore forests worldwide. We also explore the Singapore Biodiversity Index, a tool designed to meas…

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804: Studying How Dryland Ecosystems Respond to Changes in Water Availability - Dr. Andrew Felton 46:07

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Dr. Andrew Felton is an Assistant Professor in the Department of Land Resources and Environmental Sciences within the College of Agriculture at Montana State University-Bozeman where he is Principal Investigator of the Felton Lab there. Andrew splits his time between teaching and his research lab. His research focuses on dry land ecosystems, which …