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Those of us who studied anthropology in the latter half of the 20th century most likely learned that the birthplace of humankind was East African countries such as Tanzania and Kenya. But for much of that same period, the apartheid regime in South Africa largely prohibited archaeological excavations, at least in part because it didn’t want to unearth any evidence that Blacks and Whites shared common ancestors. This week on Sea Change Radio, we take a look at some of the stunning archaeological discoveries that have emerged from South Africa over the past fifteen years. Our guest today is Dr. Keneiloe Molopyane, an archeologist who leads research in an area known as the Cradle of Humankind. In our wide-ranging discussion with Dr. Molopyane, we get a quick anthropology lesson, learn more about discoveries from the region, and explore the historical context of these prehistorical finds.Read the show transcript

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Disgust, disdain and disbelief are emotions many of us have felt since the November election – and with good reason. But how long can we stay disillusioned and disaffected before fighting back? This week on Sea Change Radio, we speak with author Dave Zirin, from The Nation and Edge of Sports, to have a cathartic chat about the future of this country and how to cope.Read the show transcript

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This week on Sea Change Radio, we take a break from worrying about the election and look beyond these shores. First, we speak to Ayoola Dominic, the CEO and Co-Founder of Koolboks – an innovative refrigeration solution for the large swaths of sub-Saharan Africa that don’t have reliable access to electricity. We get an in-depth look at the company’s technology, learn about the challenges they’re facing and discuss the relationship between Koolboks and the Clinton Global Initiative. Then, we revisit part of our 2023 conversation with author Tim Killeen who has chronicled efforts to curb deforestation in the Amazon.Read the show transcript

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Coral reefs are among the planet’s most beautiful treasures, hosting creatures strange and colorful. They’re more than just pretty, though. Coral reefs provide vital habitats for a vast array of marine organisms, they are an essential piece of ocean ecosystems, and they actually protect coastlines from erosion. This week on Sea Change Radio we speak to Curt Storlazzi from the US geological survey who outlines a recent study promoting the bolstering of coral reefs off of Puerto Rico and Florida. Storlazzi compares coral reefs to seawalls in terms of protecting us from rising sea levels, gives a snapshot of the study’s cost benefit analysis, and explains how the proposed reef bolstering program could help protect vulnerable coastal populations.Read the show transcript

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California kicked off 2025 with some of the most devastating wildfires in the state’s history. Thousands have already lost their homes, dozens have been killed, and as of today the largest of the Los Angeles area fires is only 14% contained. This week on Sea Change Radio we speak with meteorologist Anthony Edwards of the San Francisco Chronicle to learn more about what caused the fires, how climate change is making events like these more commonplace and inevitable than ever, and what we can all do to better prepare for them. Then, we take a few minutes to look at the burgeoning industry of amateur meteorology in the ski industry and the impact that the growth in untrained meteorological professionals is having on Edwards’s job, and on the field in general.Read the show transcript

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When you visit the World Wildlife Fund’s list of critically endangered species, the first animals named are large, beloved mammals like the African Forest Elephant and the Eastern Lowland Gorilla. While these majestic creatures tug at our heartstrings, there are also a lot of smaller, more unsung organisms that are in grave risk of extinction, like the lowly freshwater mussel. This week on Sea Change Radio, we speak to environmental writer, John Platt, the editor of The Revelator to talk about some of the less glamorous animals that have recently been declared extinct or are on the brink of extinction. First, we take a deep dive into the plight of the ivory-billed woodpecker, a regal swamp-dwelling bird whose demise may or may not have been premature. Then we discuss why Hawaii is referred to by some naturalists as the extinction capital of the world, and look at the ethical quandaries presented by the emerging field of resurrection biology, also known as de-extinction.

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This week on Sea Change Radio we speak to Lisa Song of ProPublica about her recent work spotlighting efforts by the plastics industry to make its fossil fuel-based products seem benign. We examine how plastic recycling falls short in many areas, look at the problems surrounding a relatively new plastic recycling process called pyrolysis, and then discuss her trip to Ottawa, Canada where she attended a UN conference which purported to be plastic-free.

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This week on Sea Change Radio, a conversation about the vast and varied coastline of the great state of Maine with Peter Slovinsky, a marine geologist with the Maine Geological Survey. We learn about living coastlines, efforts to protect Maine’s coast from rising seas and more frequent storms – and get a bit of a geography lesson at the same time.

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When we think about the transition to renewable energy sources, many of us imagine rooftop solar panels and wind turbine-dotted hills. But it’s not just about capturing energy, it’s also about keeping it. This week on Sea Change Radio we speak with Matt Simon, a Grist senior staff writer, to discuss long-duration energy storage. The transition to renewables for utilities is still very much evolving — efficiency, intermittency, and storage are among the issues scientists have yet to perfect. Simon shares some ideas for how we can build upon existing technologies to store solar and wind power, with longer capacity than lithium-ion batteries, ranging from reservoirs and caverns to our existing fleet of electric vehicles.Read the show transcript

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Since 1973, the Tyler Prize for Environmental Achievement has been bestowed upon people who have made a significant impact in the fight for a sustainable planet. In 2019, we spoke with that year’s Tyler Prize Laureate, Warren Washington, to learn about the beginnings of his groundbreaking career as an atmospheric scientist. This week on Sea Change Radio, we pay tribute to Dr. Washington, who recently passed away at the age of 88. He was the second African American to receive a PhD in meteorology, a former chair of the National Science Board, and a senior scientist at the National Center for Atmospheric Research in Boulder, Colorado. Then, we revisit part of our conversation with physicist Hattie Carwell to learn about her long, illustrious career in the atomic energy space as well as her work at the Museum of African American Technology.