Don't Panic Geocast

Hosted by John Leeman and Shannon Dulin

Technology Science EducationInterviews guests

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Episodes

434

Latest episode

Aug 2026

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About the show

John Leeman and Shannon Dulin discuss geoscience and technology weekly for your enjoyment! Features include guests, fun paper Friday selections, product reviews, and banter about recent developments. Shannon is a field geologist who tolerates technology and John is a self-proclaimed nerd that tolerates geologists.

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60 recent

September 19, 202656 min

Episode 434 - "darkness sometimes brings profundity"

How do you know if your cool new result is real or just some artifact? Is it data or noise, and are those not always so dissimilar? This week we tackle that along with how good your BS detector is. Fun Paper Friday Is your BS just BS or fake profundity? Pennycook, Gordon, et al. "On the reception and detection of pseudo-profound bullshit." Judgment and Decision making 10.6 (2015): 549-563. Contact us: Show Support us on Patreon! www.dontpanicgeocast.com @dontpanicgeo dontpanicgeocast@gmail.com John Leeman www.johnrleeman.com @geo_leeman Shannon Dulin @ShannonDulin

September 11, 202648 min

Episode 433 - "2 totally useless degrees "

Wildfires can change the landscape and have geologic implications. Also, what makes your sneakers squeak, and what does that have to do with earthquakes? Fun Paper Friday A peek into the physics of squeaky sneakers Contact us: Show Support us on Patreon! www.dontpanicgeocast.com @dontpanicgeo dontpanicgeocast@gmail.com John Leeman www.johnrleeman.com @geo_leeman Shannon Dulin @ShannonDulin

August 28, 20261 hr 9 min

Episode 432 - "Like walking around inside someone's mouth"

This week we recap the GEARS 2026 workshop, our return from summer break, how hot it has been, and chat about floods of the 1300's in Europe. GEARS Workshop Fun Paper Friday Kiss, Andrea, et al. "Cascading continental-scale floods across Europe in 1342–1343." Nature (2026): 1-8. Contact us: Show Support us on Patreon! www.dontpanicgeocast.com @dontpanicgeo dontpanicgeocast@gmail.com John Leeman www.johnrleeman.com @geo_leeman Shannon Dulin @ShannonDulin

June 26, 202632 min

Episode 431 - Philippines Earthquake

There was a very large earthquake in the Philippines - John and Shannon break down what you need to know. We also explore the question - what's the deal with birds? Fun Paper Friday Baldassarre, Daniel T. "What’s the Deal with Birds." Sci J Res Rev 2 (2020): 1-4. Contact us: Show Support us on Patreon! www.dontpanicgeocast.com @dontpanicgeo dontpanicgeocast@gmail.com John Leeman www.johnrleeman.com @geo_leeman Shannon Dulin @ShannonDulin

June 5, 20261 hr 2 min

Episode 430 - "I am being ambushed"

This week John and Shannon discuss the book "Slow Productivity", our other summer reading lists, and if swearing makes your exercise sessions better. Fun Paper Friday Jiannine, Lia, and Jose Antonio. "The effects of cursing on exercise performance." Journal of Exercise Physiology Online 26.5 (2023). Contact us: Show Support us on Patreon! www.dontpanicgeocast.com @dontpanicgeo dontpanicgeocast@gmail.com John Leeman www.johnrleeman.com @geo_leeman Shannon Dulin @ShannonDulin

May 29, 202648 min

Episode 429 - "Summer Shorts" GPR

This week we talk about GPR or ground penetrating radar as Shannon considers buying one and asks what to look for. Fun Paper Friday Do trees glow before lightning strikes? McFarland, P. J., et al. "Corona discharges glow on trees under thunderstorms." Geophysical Research Letters 53.4 (2026): e2025GL119591. Contact us: Show Support us on Patreon! www.dontpanicgeocast.com @dontpanicgeo dontpanicgeocast@gmail.com John Leeman www.johnrleeman.com @geo_leeman Shannon Dulin @ShannonDulin

May 15, 202656 min

428: Episode 428 - "Pedagogical Gold"

This week we talk about how you should approach an outcrop in the field for the first time. What do you look for? What kind of notes do you take? This and more field camp tips plus a discussion about the rheology of pasta sauce. Fun Paper Friday Busiello, Daniel Maria, Vincenzo Maria Schimmenti, and Ivan Di Terlizzi. "Physical properties of a perfect pasta sauce." Physics Today 2026 (2026). Contact us: Show Support us on Patreon! www.dontpanicgeocast.com @dontpanicgeo dontpanicgeocast@gmail.com John Leeman www.johnrleeman.com @geo_leeman Shannon Dulin @ShannonDulin

March 28, 202658 min

Episode 427 - "Feeding Tubes Yo!"

This week we help a listener identify their bizarre fossil - and it's a trace fossil! Learn all about it and find out if you'd remember more if we were funnier! Trace Fossil Dictionary Shannon’s Favorite Trackway Asterosoma Fun Paper Friday Would you remember more about science if your teachers presented it in a funny way? Frank, Alexandra L., et al. "Wit meets wisdom: the relationship between satire and anthropomorphic humor on scientists' likability and legitimacy." Journal of Science Communication 24.1 (2025): A04.

March 13, 202642 min

Episode 426 - "Hard K Sound is Hilarious"

This week, we continue to talk about temperature with a discussion of temperature scales, where they came from, and why there are so many! Fun Paper Friday Kaiser, Caspar, and Andrew J. Oswald. "The scientific value of numerical measures of human feelings." Proceedings of the National Academy of Sciences 119.42 (2022): e2210412119. Contact us: Show Support us on Patreon! www.dontpanicgeocast.com @dontpanicgeo dontpanicgeocast@gmail.com John Leeman www.johnrleeman.com @geo_leeman Shannon Dulin @ShannonDulin

February 6, 202658 min

Episode 425 - "How jiggly are your bits?"

What is temperature? Why do we care? Where did all of these temperature scales come from? This week, we find out! Fun Paper Friday Di Lorenzo, Emilia, et al. "Periodic cooking of eggs." Communications Engineering 4.1 (2025): 1-10. Contact us: Show Support us on Patreon! www.dontpanicgeocast.com @dontpanicgeo dontpanicgeocast@gmail.com John Leeman www.johnrleeman.com @geo_leeman Shannon Dulin @ShannonDulin