Don't Panic Geocast

Hosted by John Leeman and Shannon Dulin

Technology Science EducationInterviews guests

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Episodes

432

Latest episode

Jun 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

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

January 30, 202646 min

Episode 424 - "Aunt Betty" Liquefaction

This week it's all about liquefaction as we explore why some caskets are above ground and how some cars get half way buried. Flame Structure Sand Boil Quicksand Fun Paper Friday Can creatively shaped pasta fold itself when cooked? Tao, Ye, et al. "Morphing pasta and beyond." Science Advances 7.19 (2021): eabf4098. Contact us: Show Support us on Patreon! www.dontpanicgeocast.com @dontpanicgeo dontpanicgeocast@gmail.com John Leeman www.johnrleeman.com @geo_leeman Shannon Dulin @ShannonDulin

January 10, 20261 hr 1 min

Episode 423 - "The rumors of our death"

We are back after a very challenging 2025 but don't panic - there is a plan! Fun Paper Friday Taloni, Andrea, Vincenzo Scorcia, and Giuseppe Giannaccare. "Large language model advanced data analysis abuse to create a fake data set in medical research." JAMA ophthalmology 141.12 (2023): 1174-1175. Contact us: Show Support us on Patreon! www.dontpanicgeocast.com @dontpanicgeo dontpanicgeocast@gmail.com John Leeman www.johnrleeman.com @geo_leeman Shannon Dulin @ShannonDulin

November 7, 202546 min

Episode 422 - "Melissa"

We're still here - it has just been a very difficult time, but this week we're talking about Hurricane Melissa and Halloween Candy! Hurricane Melissa Video Inside the Hurricane Fun Paper Friday Trick or Treat! Maybe it should be Treat or Toy? Find out in this week's Fun Paper! Schwartz, Marlene B., Eunice Y. Chen, and Kelly D. Brownell. "Trick, treat, or toy: children are just as likely to choose toys as candy on Halloween." Journal of nutrition education and behavior 35.4 (2003): 207-209. 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 19, 20251 hr 6 min

Episode 421 - "Come work for you"

This week, we chat about our GEARS workshop that recently wrapped up, how it has evolved, and how it went! GEARS Workshop Fun Paper Friday Hejnol, Andreas, and Mark Q. Martindale. "The mouth, the anus, and the blastopore—open questions about questionable openings." Animal Evolution: Genomes, Fossils, and Trees (2009): 33-40. Contact us: Show Support us on Patreon! www.dontpanicgeocast.com @dontpanicgeo dontpanicgeocast@gmail.com John Leeman www.johnrleeman.com @geo_leeman Shannon Dulin @ShannonDulin