Green Frequency

Why are we afraid of the deep sea, and how does that fear shape our relationship with it? Professor Alan Jamieson, deep-sea scientist and co-host of The Deep-Sea Podcast , joins Green Frequency to explore the complicated relationship between public perceptions of the deep ocean and our willingness to understand and protect it. Drawing on his paper Fear and Loathing of the Deep Sea , we examine the...

What does it actually take to combat desertification? From satellites and sustainable land management to international negotiations, the world has a growing toolkit to address land degradation and drought. But putting those solutions into practice is another story. In Part 2 of our coverage of the UN Convention to Combat Desertification (UNCCD) COP17 in Ulaanbaatar, Mongolia, we're moving from...

What is desertification, why is land degrading around the world, and what can Mongolia teach us about the causes? In Part 1 of Green Frequency’s coverage of UNCCD COP17 in Ulaanbaatar, host Clark Marchese explores the science and politics of land degradation, from the origins of the UN Convention to Combat Desertification and Land Degradation Neutrality to the pressures facing Mongolia’s vast gras...

Ocean technology cannot operate alone. Nicolas Pade, executive director of the European Marine Biological Resource Centre, joins Green Frequency to unpack five policy recommendations emerging from Blue Tech Europe 2026. We explore technological sovereignty, strategic procurement, collaboration between academia and industry, usable ocean data, market demand and the skills needed to sustain ocean-ob...

What happens behind the exhibits at a natural history museum? At Te Papa Tongarewa, the Museum of New Zealand, millions of specimens form a scientific record stretching across species, ecosystems, and generations. In this episode of Green Frequency, Clark is joined by deep-sea researcher and curator of fishes Dr. Thom Linley to explore what those collections are actually for. We find out why resea...

What would happen to coffee and cocoa if humans deliberately tried to cool the planet? Atmospheric scientist Dr. Nina Grant joins Green Frequency to explain stratospheric aerosol injection, or SAI, a proposed form of solar geoengineering that would introduce reflective particles into the upper atmosphere. Drawing on climate and crop modeling for cocoa in Ghana and coffee in Brazil, Nina explains w...

Heat waves are arriving earlier, lasting longer, and reaching further into daily life. So what do we do before the next one arrives? Climate researcher Kartikeya Bhatotia joins Green Frequency to explain what decades of research and experimentation in India can teach a rapidly warming world. Drawing on Critical Perspectives on Extreme Heat in India, he explores why heat is more than a temperature,...

Mountain gorillas were once on the brink of extinction. Today, they are the only great ape whose population is increasing. In this season finale of Green Frequency, Gorilla Doctors Chief Communications Officer Amy Bond joins Dr. Elena Berg for a conversation about conservation, climate anxiety, cooperation, and environmental agency. Recorded live at The American University of Paris, the discussion...

Bioluminescent water that cameras can barely capture. Environmental filmmaker and researcher Dr. Isabelle Carbonell explores Bio Bay in Vieques, Puerto Rico, one of the brightest bioluminescent bays on Earth, to ask a bigger question: what happens when nature resists visibility? This episode examines environmental filmmaking, underwater cinema, ocean representation, bioluminescence, and the limits...

How many species are there on Earth? Marine biologist and taxonomist Manuel Caballero Gutierrez explains how scientists estimate global biodiversity, discover new species, and why humanity may currently know only around 25% of the life forms that exist on this planet. This episode of Green Frequency explores taxonomy, ocean exploration, extinction, climate change, and the long scientific process o...

Colonial law helped shape modern deforestation. Legal historian Mariana Dias Paes explains how 19th-century property law, land dispossession, and colonial legal systems accelerated rainforest destruction in Brazil’s Atlantic Forest and continue to influence environmental conflicts today. This episode of Green Frequency explores colonialism, Indigenous land rights, private property, environmental h...

We already understand many of the world’s biggest problems. So why are they still unsolved? A lot of the science is in. We know what is driving climate change, biodiversity loss, and pressure on global food systems. But knowledge alone does not create change. Somewhere between evidence and action, people have to make decisions. This episode explores that space. Using food systems as a case study,...

Water is simple to drink, but complex to understand. Water is essential to life, yet 2 billion people lack reliable access to clean drinking water. At the same time, millions of tons of plastic waste come from single-use bottles each year. So what actually makes water “sustainable”? Environmental scientist and water sommelier Dr. Elena Berg uses drinking water as a case study to unpack the complex...

Climate justice explained: beyond emissions and policy. What does climate justice actually mean—and why is it so hard to define? This episode of Green Frequency breaks down climate justice as both a political and ethical challenge, not just an environmental one. Political scientist Dr. Rebecca Marwege explores how climate change reflects global inequalities, from coastal communities in Senegal to...

Where does climate change stand in 2026? In this first episode of Green Frequency, we take a grounded look at the state of climate change today. Where progress is being made, where challenges remain, and what the data actually tells us. Featuring a conversation with climate scientist Dr. Claudio Piani and student activist Averie Gannon, this episode explores global emissions trends, the future of...

Green Frequency: Earth Radio is an environmental science podcast exploring the research, stories, and decisions shaping our planet. Each week, we unpack emerging environmental research, hear stories from civil society and the frontlines of conservation, and follow developments in global environmental policy and climate action. From forests and oceans to courtrooms and conference halls, Green Frequ...