Dunkelflaute with Dr Barnes (391)

In this episode, we speak with Dr. Andy Reisinger, an internationally recognized expert in climate change science and policy, with a focus on mitigation and agricultural emissions. Together, we unpack the concept of climate overshoot - why the world is set to exceed the 1.5°C warming limit within the next five years, and what that means for people and the planet. Dr. Reisinger explores whether the damage already done is reversible, what it would take to get back on track, and, hypothetically, the bold actions he would take if he had the power to drive real societal change to combat climate change. Linkedin: Andy Reisinger

Consumer technology expert Ashley Iredale returns for part two, bringing more surprising facts about everyday household appliances. We break down why your fridge actually contains more heaters than coolers, demystify the Energy Star rating system, and settle the debate on whether front-loading or top-loading washers are more efficient at cleaning clothes.

This episode i'm joined by Ashley Iredale, a consumer technologist and content producer whose winding career through industrial design has armed him with a trove of quirky tips and practical wisdom. Ashley breaks down the real efficiency of hand-washing versus dishwashers, explains how a dishwasher can double as an oven, and settles the age-old question of how toilet paper should hang. We also dig into his non-linear career journey and how it led to his deep well of surprising insights. There was so much to cover that Part Two lands next week! Linkedin: Ashley Iredale

In this episode, I'm joined by the legendary Dame Susan Jocelyn Bell Burnell - the pioneering astrophysicist who discovered pulsars, launching an entirely new field of astrophysics. She began her PhD searching for quasars, but soon noticed a strange, repetitive signal appearing night after night - so peculiar she jokingly labelled it LGM ("Little Green Men"). That signal would become one of the most important astronomical discoveries of the century, though the credit and Nobel Prize were controversially awarded to her supervisor. Dr Bell Burnell also shares why she donated $4.3 million of her own prize money to support underrepresented researchers in physics, especially women and girls, and the work she's doing to make the field more inclusive. We dive into her views on religion, her life in science since that landmark discovery, and her mission to help more young women pursue careers in physics.

This week I'm joined by John Staton, one of Australia's leading sunscreen-testing experts, to unpack the big headlines surrounding sunscreen safety. A recent Choice report revealed that 16 out of the 20 tested sunscreen products failed to meet their advertised SPF rating by a significant figure. John helps us to understand what is really going on. He breaks down how sunscreens actually work and the science behind SPF testing and why so many products fell short. 

In this episode, friend of the show and astrophysicist Professor Geraint Lewis returns to help me wrap my head around one of the strangest ideas in modern physics: Time Crystals. After stumbling across a Nature article that left my brain pleasantly scrambled, I called up Geraint for a deep-dive into what time crystals are and why physicists are so excited about them. We explore why Time Crystals don't have real-world applications yet, but how they could open entirely new frontiers in future technology. 

In this episode, futurist and award-winning scientist Dr Catherine Ball dives into the state of science in Australia, uncovering the good, the bad, and the overlooked. From humanoid robotics and wearable exoskeletons transforming healthcare, to Australia's lagging space economy, Ball offers an unflinching look at where we stand. She also highlights world-class cancer detection research happening in Australia, like PROCAN and early ovarian cancer screening innovations that deserve far more recognition. Passionate about inspiring the next generation, Ball shares her advice for young Australians ready to shape the future of science ww.drcatherineball.com/

In this episode, I'm joined by Professor Clare Collins, Australian dietitian and Professor of Nutrition and Dietetics at the University of Newcastle. Clare is my go-to expert when it comes to all things nutrition, and today she's here to unpack the often confusing world of processed and ultra-processed foods. We dive into what really separates the two, explore the role of additives, emulsifiers, and flavour enhancers, and discuss how some of these ingredients, designed to make foods more appealing, may be doing our health more harm than good. Plus, she shares practical, no-nonsense tips to help you make smarter choices next time you're wandering the grocery aisles. Check out Clare's free online resource, No Money No Time, for simple, budget-friendly recipes and nutrition advice - nomoneynotime.com.au/ Follow Clare on X: @ProfCCollins and LinkedIn: Clare Collins.

In this episode, we chat with Dr. Renee Goreham, a physicist and nanotechnologist at the University of Newcastle, and passionate science communicator. Renee is an experimental physicist exploring how our breath could hold the key to detecting lung cancer early—by identifying specific proteins as biomarkers. We also delve into her PhD student's exciting research into a new red-light laser diagnostic tool for breast cancer. Along the way, Renee breaks down the basics of cell biology and shares her inspiring, non-linear journey through physics, nanotech, and beyond. A brilliant example of multidisciplinary science in action. Follow Renee on TikTok: @dr_renee_goreham

In this episode, we speak with Associate Professor Leszek Lisowski, Head of the Translational Vectorology Unit at the Children's Medical Research Institute (CMRI), about the cutting-edge world of gene therapy. He explains how viral vectors are engineered to deliver life-saving treatments for rare genetic diseases - many of which are so uncommon, they're only known by the name of the affected gene. Despite being often overlooked, genetic diseases impact 10% of adults and 30% of children in hospitals. Leszek sheds light on the challenges of diagnosis, the promise of emerging genetic testing, and how his work is paving the way for more accurate, effective therapies. Linkedin: Children's Medical Research Institute, Leszek Lisowski Facebook: @jeansforgenes Instagram: @jeansforgenesau