A show where curiosity and the natural world collide. We explore science, energy, environmentalism, and reflections on how we think about and depict nature, and...
Ever since fluoridation became widespread in the 1950s, cavities in kids have fallen drastically. The effort is considered one of the ten greatest public health achievements of the 20th century. But it’s also one of the most controversial. At really high doses, fluoride is toxic – it can calcify your ligaments and joints and even fuse your spine. It also potentially has impacts on our brains. There’s a small but growing body of research suggesting that fluoride can inhibit intelligence in children. This is still unsettled and hotly debated science but, as host Nate Hegyi finds out, in our polarized and increasingly digital world… unsettled science can quickly become doctrine. Featuring Rene Najera, Philippe Grandjean and Mark HartzlerFor a transcript and full list of credits, go to outsideinradio.org. SUPPORTOutside/In is made possible with listener support. Click here to become a sustaining member of Outside/In. Follow Outside/In on Instagram or join our private discussion group on Facebook.LINKSThe CDC has a website that tells you how much fluoride is in your drinking water. Here’s the reasoning behind the U.S. Public Health Service’s recommended limit for artificially fluoridating water. The National Toxicology Program suggests that a child’s IQ could be impacted if they or their pregnant mother ingests more than 1.5 ppm of fluoride in their water. Philippe Grandjean’s peer-reviewed study suggests that the safe level of fluoride in water for pregnant women is much lower than what the U.S. Public Health Service recommends.The American Academy of Pediatrics and the American Dental Association have cast doubt on the National Toxicology Program’s conclusions and say that the fluoride levels in U.S. waters are safe. A U.S. district court judge ordered the Environmental Protection Agency to take a second look at its limits for fluoride in the water, citing the National Toxicology Program’s monograph.
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29:55
What are Trump's Climate Plans?
What has Donald Trump claimed he would do when it comes to environmental policy in the U.S.? What happened during his last administration? And what are the limits on executive powers when it comes to treaties and global agreements?Just days before Trump’s inauguration, this episode comes to us from our friends over at Civics 101. Featuring Elizabeth Bomberg.This episode was produced by Hannah McCarthy with help from Nick Capodice and Marina Henke. For a transcript and full list of credits, go to outsideinradio.org. LINKSCheck out Nate’s episode on Biden’s climate legacy — “Is Biden a Good Climate President?” SUPPORTOutside/In is made possible with listener support. Click here to become a sustaining member of Outside/In. Follow Outside/In on Instagram or join our private discussion group on Facebook.
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39:27
The tinned fish renaissance
Sardines are in vogue. Literally. They are in Vogue magazine. They’re delicious (subjectively), good for you, and sustainable… right? Recently, a listener called into the show asking about just that.“I've always had this sense that they're a more environmentally friendly fish, perhaps because of being low on the food chain. But I'm realizing I really have no sense of what it looks like to actually fish for sardines,” Jeannie told us.The Outside/In team got together to look beyond the sunny illustrations on the fish tins. Is there bycatch? What about emissions? Are sardines overfished? If we care about the health of the ocean, can we keep eating sardines?Featuring Jeannie Bartlett, Malin Pinsky, and Zach Koehn.To share your questions and feedback with Outside/In, call the show’s hotline and leave us a voicemail. The number is 1-844-GO-OTTER. No question is too serious or too silly.For full credits and transcript, visit outsideinradio.org. SUPPORTOutside/In is made possible with listener support. Click here to become a sustaining member.Subscribe to our (free) newsletter.Follow Outside/In on Instagram or Twitter, or join our private discussion group on Facebook. LINKSIf you’re interested in finding sustainable fisheries, our sources recommended checking out Monterey Bay Aquarium Seafood Watch and the Marine Stewardship Council.Sardines (specifically, Fishwife) in Vogue. Why are tinned fishes in every boutique store, and why do all of those stores feel exactly the same? For Grub Street, Emily Sundberg reported on the digital marketplace behind the “shoppy shop.” The documentary about the epic South African sardine run is “The Ocean’s Greatest Feast” on PBS.Zach Koehn’s paper, “The role of seafood in sustainable diets.” Malin Pinsky’s research found that small pelagic fish (like sardines, anchovies, and herring) are just as vulnerable to population collapse as larger, slower-growing species like tuna. Explore the designs of historical Portuguese fish tins (Hyperallergic).An animated reading of The Mousehole CatThe last sardine cannery in the United States closed in 2010. But you can explore this archive of oral histories with former workers in Maine factories (many of them women and children).
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34:55
Once in a blue moon
The next blue moon isn’t until May 2026, but luckily for you, you won’t have to wait that long to hear the Outside/In team answering listeners’ questions. This time, we’re exploring why blue moons are cool (or even what the heck a blue moon even is) and other seasonably appropriate curiosities.What’s all the fuss about a blue moon?Should we leave the leaves?Which is a more sustainable choice: real or fake Christmas trees?What happens to Christmas tree stumps?What does all that road salt do to the environment?Featuring Asmeret Asefaw Berhe, Tim Gaudreau, Victoria Meert, and Sujay Kaushal.Thanks to Outside/In listeners Zoe, Janet, Gio, Alexi, Prudence, Wendy, Mo, and Devon for their questions and contributions. SUPPORTOutside/In is made possible with listener support. Click here to become a sustaining member of Outside/In. Follow Outside/In on Instagram or join our private discussion group on Facebook. LINKSCheck out this study on the long-term impacts of leaf litter removal in suburban yards.Looking for a creative and cute way to keep leaves in your lawn or garden? Consider building a “bug snug.”Read about the mad dash for salt that rescued the 2014 Sochi Olympics’ ski events (NYT).Learn more about the turn to beet juice and beer-based de-icers to reduce the harm of excess salt to the environment (AP News) CREDITSHost: Nate HegyiReported, produced, and mixed by Felix Poon, Justine Paradis, and Marina Henke.Edited by Taylor Quimby, Rebecca Lavoie, and Justine Paradis.Our staff includes Kate Dario.Executive producer: Taylor QuimbyRebecca Lavoie is NHPR’s Director of On-Demand AudioMusic by Blue Dot Sessions, Jules Gaia, and Jharee.Our theme music is by Breakmaster Cylinder.Outside/In is a production of New Hampshire Public RadioSubmit a question to the “Outside/Inbox.” We answer queries about the natural world, climate change, sustainability, and human evolution. You can send a voice memo to [email protected] or leave a message on our hotline, 1-844-GO-OTTER (844-466-8837).
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29:08
Bigfoot is from North Carolina
Appalachia is Bigfoot territory. In a big way. This week, we look at the mythical beast's legend, lore and sizable economic impact in the region. And we follow one reporter’s journey through the mountains and foothills of western North Carolina in search of Sasquatch.This episode comes to us from the wonderful folks at The Broadside from North Carolina Public Radio, a weekly podcast exploring stories happening in their home at the crossroads of the American South. Other topics include how the world ‘y’all’ is taking over the world, the impact of dangerous heat on workers, and why cola became the king of beverages.Featuring Emily Cataneo and Jerry Millwood. SUPPORTOutside/In is made possible with listener support. Click here to become a sustaining member.Subscribe to our (free) newsletter.Follow Outside/In on Instagram or Twitter, or join our private discussion group on Facebook. LINKSCheck out Emily Cataneo’s story on Appalachian Bigfoot culture at The Assembly here. CREDITSOutside/In host: Nate HegyiOutside/In team: Justine Paradis, Felix Poon, Marina Henke, and Kate Dario.Executive Producer: Taylor Quimby Intro music by bomull. NHPR’s Director of Podcasts is Rebecca LavoieOutside/In is a production of New Hampshire Public Radio.
A show where curiosity and the natural world collide. We explore science, energy, environmentalism, and reflections on how we think about and depict nature, and always leave time for plenty of goofing off.
Outside/In is a production of NHPR.
Learn more at outsideinradio.org
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