Green Frequency | Environmental Science & Earth Radio
Green Frequency is an environmental science and climate action podcast that explores ecological research, conservation stories, environmental justice, and global policies. Hosted by science communicator Clark Marchese, the show features deep-dive interviews, narrative reporting, and field coverage from international environmental summits and conservation frontlines. It brings scientists, advocates, policymakers, artists, and communities into conversation about climate change, biodiversity, environmental law, oceans, forests, and practical solutions. The podcast aims to offer clear context and global perspectives to help listeners understand planetary changes and how to stay engaged.
Episodes
Coffee and Cocoa: Global Warming and Geoengineering Scenarios
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 wh
What Are We Going to Do About These Heat Waves? Lessons from India
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 Gorilla Conservation: The Work Ongoing
Mountain gorilla recovery proves change is possible. Gorilla Doctors Chief Communications Officer Amy Bond joins environmental scholar Dr. Elena Berg to examine how long-term conservation succeeds and how people remain engaged when progress is slow and uncertain. Bond explains how Gorilla Doctors provides veterinary care to eastern gorillas in Rwanda, Uganda, and the Democratic Republic of the Con
Environmental Filmmaking and the Limits of Seeing
Some environmental wonders resist the camera. Environmental filmmaker and cinematographer Dr. Isabelle Carbonell takes listeners to Bio Bay in Vieques, Puerto Rico, where dense concentrations of dinoflagellates create brilliant bioluminescence that cameras struggle to capture. That technical failure becomes a question about visibility, wonder, embodiment, and whether an imperfect image can open ot
How Many Species Are There on Earth?
Most of Earth's species remain unknown to science. Marine biologist and taxonomist Dr. Manuel Caballero Gutierrez explains how scientists estimate global biodiversity and why humanity may currently know only about 25 percent of the species that exist. He walks through taxonomy as scientific detective work, from deep-sea expeditions and specimen collection to anatomical study, DNA analysis, museum
Colonial Law and Deforestation: When Laws Destroy Nature
Colonial law helped build modern deforestation. Legal historian Dr. Mariana Dias Paes traces how nineteenth-century property law created mechanisms for land dispossession and environmental destruction in Brazil's Atlantic Forest. Her research connects that history to the Amazon and Congo rainforests, where colonial legal systems continue to shape land disputes, court decisions, Indigenous rights,
Science Can’t Change the World on Its Own
Science alone does not make environmental change. Amanda Harding and Sarah Glavan of Convene explore the missing space between research, environmental policy, and the decisions people make inside real systems. Using food systems and the EAT-Lancet Commission as a case study, they explain deliberate dialogue and science-policy-society interfaces: structured spaces where researchers, farmers, fisher
Drinking Water: Why Sustainability Is So Complicated
Drinking water reveals sustainability's complexity. Environmental scientist and water sommelier Dr. Elena Berg uses bottled water to show why environmental choices rarely divide neatly into good and bad. She traces how geology and mineral content create differences among waters, contrasts multinational bottlers with smaller single-source producers, and examines plastic waste, freshwater access, in
What Does Climate Justice Actually Mean?
Climate change is never socially neutral. Political scientist Dr. Rebecca Marwege explains climate justice by examining who caused the crisis, who experiences the greatest harm, and who has the resources and power to respond. Cases involving the Lebu fishing community in Senegal and Far Rockaway after Hurricane Sandy show how climate adaptation, displacement, rebuilding, and even the ability to re
Climate change | Where are we now?
Climate progress is real, but nowhere near enough. In the first episode of Green Frequency, climate scientist Dr. Claudio Piani joins student activist Averie Gannon to assess climate change in 2026 through evidence rather than denial or catastrophe. They examine global and per-capita emissions, areas of progress in the United States and Europe, the falling cost of renewable energy, and what curren
Green Frequency Trailer
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 Frequen
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