Professor Treena Burgess Executive Director of the Harry Butler Institute at Murdoch University, is a leading plant pathologist at Murdoch University and a globally recognised expert in forest health, biosecurity, and invasive plant diseases. Her research focuses on how pathogens spread through natural and managed ecosystems, particularly the devastating impacts of introduced diseases on native forests and biodiversity.

With extensive work on pathogens such as Phytophthora—one of the most destructive plant disease groups worldwide—Professor Burgess’ research has been critical in understanding how these organisms move through landscapes, threaten ecosystems, and can be managed through improved biosecurity and monitoring. Her work spans Australia and internationally, contributing to global efforts to protect forests, agriculture, and natural systems from emerging disease threats.

By combining field research, molecular tools, and applied management, Professor Burgess is at the forefront of safeguarding ecosystems from one of the most significant but often unseen threats to biodiversity

In this episode, I sit down with Professor Jennifer Verduin, Oceanographer and Pro Vice Chancellor at Murdoch University, with a passion for seagrass. Fresh from an expedition to Antarctica as part of a global leadership program for women in STEMM, Jennifer shares what it was like to stand among thousands of penguins, witness icebergs the size of cities, and confront the stark realities of a changing climate.

Together, we explore the emotional and scientific impact of seeing global warming up close, the interconnectedness of Earth’s oceans, and how collaboration between scientists and policymakers can help protect our planet’s most fragile ecosystems. From tales of whales and glaciers to reflections on leadership, eco-grief, and hope, this conversation captures both the awe and urgency of protecting our blue planet.

In a world shaped by headlines, algorithms, and endless scrolls, who really controls the narrative?

Associate Professor Tauel Harper, media scholar at Murdoch University, joins Kurt Krispyn to unpack the complex intersections of democracy, persuasion, and misinformation. From political spin and media ownership to social media’s sway over truth and trust, they explore how our beliefs are shaped, and how we can sharpen our critical thinking in an age of constant noise.

A thought-provoking conversation on free speech, manipulation, and the power of genuine understanding, a reminder that meaningful change starts with awareness.

Conversation Between Trees wasn’t just another podcast recording; it was a moment that redefined the idea of the public lecture, a tradition that has been with us for centuries. Hosted by the Harry Butler Institute at Murdoch University, this was the first live podcast I’ve ever done, and it was an experience that meant so much to both Rachel and me.

Together, in front of a vibrant, engaged audience, we celebrated Rachel’s promotion to Professor while weaving science, storytelling, and laughter into something entirely new. Unlike the classic lecture format, this conversation unfolded in real time, unscripted, alive, bringing listeners and the audience into the heart of what science communication can be.

This event marked a new way of sharing knowledge, bridging the deep roots of academic tradition with the dynamic immediacy of podcasting. For Rachel and me, it was more than a recording; it was a night that blended community, history, and innovation into one unforgettable exchange.

Dr Melissa Hadley Barrett is a clinical sexologist, educator, and leading voice in sexual health and wellbeing, specialising in male sexual function, relationships, and ageing. Her work focuses on the science of intimacy—challenging misconceptions around libido, erectile dysfunction, and hormonal change, while helping men better understand how lifestyle, health, and psychology shape sexual wellbeing.

Through evidence-based practice and open, honest conversation, she is helping break down stigma around topics often left unspoken, including prostate cancer recovery, performance anxiety, and the realities of sexual health across the lifespan. By bridging science, medicine, and human behaviour, Dr Hadley Barrett is reshaping how we understand sex—not just as a topic of curiosity, but as a fundamental component of overall health and quality of life.

Cyclones are among the planet’s most powerful forces- reshaping coastlines, reefs, and ecosystems with every storm. Dr. Marji Puotinen, a spatial ecological data scientist from the Australian Institute of Marine Science, joins Paramount Importance to break down what cyclones really are, how they form, why they differ from hurricanes and typhoons, and what they mean for coral reefs, migratory animals, and our changing climate.

From the physics of waves and storm tracks to the surprising ways cyclones can both damage and protect reefs, Marji explains the science in a way that’s accessible and engaging. We also explore how climate change is altering cyclone behaviour, and why understanding these storms is essential for the future of our oceans.

Mark Synnott is one of the world’s most accomplished explorers, elite climbers, and a member of the The North Face Global Athlete Team, internationally recognised for pioneering first ascents on some of the most remote and untouched cliffs on Earth. A longtime contributor to National Geographic, his expeditions span the Arctic, the Amazon, and the Himalayas—where his wild expeditions have not only pushed human limits, but also led to scientific discovery, from uncovering rare species to investigating some of exploration’s greatest mysteries.

As the author of acclaimed books including The Third Pole and The Impossible Climb, and a filmmaker working with major platforms including National Geographic and Disney, Synnott’s work goes beyond adventure—exploring why humans are driven to take risks and seek out the most extreme environments on the planet.

In this episode, Kurt sits down with Mark after meeting him in some of the most remote islands in the world, diving into a life shaped by exploration, risk, and purpose—unpacking not just how these extraordinary expeditions happen, but how they can lead to meaningful scientific discovery.

Dive into the deep past of our oceans with evolutionary biologist Dr. Axelandre Siqueira, whose work uncovers the origins and transformations of coral reef fishes over millions of years. From rare fossil records to cutting-edge genetic research, Alexandra explains how mass extinctions, shifting climates, and reef expansion shaped the dazzling diversity of species we see today.

In this wide-ranging conversation, we explore how fish evolved new feeding strategies, why coral reefs act as “fish factories,” and what ancient ecosystems can teach us about resilience in a warming world. Alexandre also shares his personal journey from inland Brazil to some of the most unique reefs on the planet, offering a fascinating perspective on science, discovery, and the wonder of marine life.

Whether you’re obsessed with fish ID or just curious about life beneath the waves, this episode reveals how evolution’s grand story is written in the scales and shapes of reef fishes.

What happens when massive oil and gas platforms reach the end of their life? Are they just scrapped or could they become thriving artificial reefs?

In this episode, Kurt sits down with marine ecologist Dr. Sean Van Elden, Deputy Director at the Marine Futures Lab at the University of Western Australia, to dive into the hidden world of decommissioned rigs and their surprising role as oases of marine life. From coral growth on steel legs to turtles, sharks, and even unexpected behaviours caught on underwater cameras, Sean reveals how these towering structures shape ecosystems and the complex debates around whether to remove them or let them live on as reefs.

This conversation unpacks the science, the politics, and the awe-inspiring moments that come with studying life around these industrial giants. It’s a fascinating look at how human infrastructure can unintentionally create new habitats and what that means for the future of our oceans.

Step into the strange and fascinating world of marsupials and megafauna with Associate Professor Natalie Warburton, a comparative anatomist and paleontologist at Murdoch University. From tiny jellybean-sized joeys crawling into pouches, to giant wombats and kangaroos that once roamed Australia, Natalie reveals the evolutionary secrets written in bones. We explore bizarre adaptations like termite-eating numbats, the underground world of marsupial moles, and even tree-climbing kangaroos on the Nullarbor. This episode dives deep into how fossils unlock Australia’s unique evolutionary story, the surprising anatomy of marsupials, and what these discoveries teach us about life on an isolated continent. Science, storytelling, and a touch of wonder – this is an episode you won’t want to miss.