Episodios

  • Episode 421 - "Come work for you"

    Episode 421 - "Come work for you"
    Sep 19 2025
    This week, we chat about our GEARS workshop that recently wrapped up, how it has evolved, and how it went! GEARS Workshop (https://leemangeophysicalllc.github.io/GEARS/2025/2025_summer_home.html) 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. (https://www.researchgate.net/profile/Andreas-Hejnol/publication/230766195_The_mouth_the_anus_and_the_blastopore_-_open_questions_about_questionable_openings/links/09e415040d58e94fcc000000/The-mouth-the-anus-and-the-blastopore-open-questions-about-questionable-openings.pdf) Contact us: Show Support us on Patreon! (https://www.patreon.com/dontpanicgeo) www.dontpanicgeocast.com (http://www.dontpanicgeocast.com) @dontpanicgeo (https://twitter.com/dontpanicgeo) dontpanicgeocast@gmail.com John Leeman - www.johnrleeman.com (http://www.johnrleeman.com) - @geo_leeman (https://twitter.com/geo_leeman) Shannon Dulin - @ShannonDulin (https://twitter.com/ShannonDulin)
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    1 h y 6 m
  • Episode 420 - "Tourist Destination" Kamchatka Earthquake

    Episode 420 - "Tourist Destination" Kamchatka Earthquake
    Sep 6 2025
    This week we are back and discussing the recent large earthquake in Russia! Fun Paper Friday Is that viral video of a fault rupture form a security camera real? This paper checks it out. Kearse, Jesse, and Yoshihiro Kaneko. "Curved Fault Slip Captured by CCTV Video During the 2025 M w 7.7 Myanmar Earthquake." The Seismic Record 5.3 (2025): 281-288. (https://pubs.geoscienceworld.org/ssa/tsr/article/5/3/281/659624/Curved-Fault-Slip-Captured-by-CCTV-Video-During) Contact us: Show Support us on Patreon! (https://www.patreon.com/dontpanicgeo) www.dontpanicgeocast.com (http://www.dontpanicgeocast.com) @dontpanicgeo (https://twitter.com/dontpanicgeo) dontpanicgeocast@gmail.com John Leeman - www.johnrleeman.com (http://www.johnrleeman.com) - @geo_leeman (https://twitter.com/geo_leeman) Shannon Dulin - @ShannonDulin (https://twitter.com/ShannonDulin)
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    46 m
  • Episode 419 - "Diamonds Everywhere" A States

    Episode 419 - "Diamonds Everywhere" A States
    Aug 8 2025
    We're hitting the open road — geologically speaking. This episode kicks off our new state-by-state series covering the most fascinating, scenic, or just plain weird geologic stops in the U.S. We’re going alphabetically (because of course we are), starting with Alabama, Alaska, and Arkansas. Some sites we've visited, others are firmly on our dream list, but every pick is guaranteed to bring a bit of science to your next adventure. Alabama Cheaha Mountain Cathedral Caverns Alaska Wrangell-St. Elias National Park Mendenhall Glacier Arkansas Crater of Diamonds State Park Blanchard Springs Caverns Fun Paper Friday Frost, Mungo, et al. "Diamond precipitation dynamics from hydrocarbons at icy planet interior conditions." Nature astronomy 8.2 (2024): 174-181. (https://www.osti.gov/servlets/purl/2324804) Contact us: Show Support us on Patreon! (https://www.patreon.com/dontpanicgeo) www.dontpanicgeocast.com (http://www.dontpanicgeocast.com) @dontpanicgeo (https://twitter.com/dontpanicgeo) dontpanicgeocast@gmail.com John Leeman - www.johnrleeman.com (http://www.johnrleeman.com) - @geo_leeman (https://twitter.com/geo_leeman) Shannon Dulin - @ShannonDulin (https://twitter.com/ShannonDulin)
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    48 m
  • Episode 418 - "I like the crystal habit"

    Episode 418 - "I like the crystal habit"
    Aug 1 2025
    What makes a mineral a favorite? In this fun and down-to-earth episode, John and Shannon swap stories about the minerals they love most — and why. Along the way, they unpack cool crystal habits, formation environments, fieldwork memories, and the aesthetic appeal of minerals from museum specimens to muddy boots. Shannon shares her appreciation for: Hematite – With its metallic luster and planetary significance. Goethite – A subtle but important iron oxide-hydroxide. Smithsonite – Beautiful colors and a fascinating history in ore geology. John counters with: Ulexite – “TV rock,” with fiber-optic properties that never fail to wow. Uraninite – A dense, radioactive reminder of geologic power and energy. Tourmaline – A colorful, complex favorite of mineral collectors and scientists alike. Fun Paper Friday James, C. W., et al. "A nanosecond-duration radio pulse originating from the defunct Relay 2 satellite." The Astrophysical Journal Letters 987.1 (2025): L16. (https://iopscience.iop.org/article/10.3847/2041-8213/ade3d3/pdf) Contact us: Show Support us on Patreon! (https://www.patreon.com/dontpanicgeo) www.dontpanicgeocast.com (http://www.dontpanicgeocast.com) @dontpanicgeo (https://twitter.com/dontpanicgeo) dontpanicgeocast@gmail.com John Leeman - www.johnrleeman.com (http://www.johnrleeman.com) - @geo_leeman (https://twitter.com/geo_leeman) Shannon Dulin - @ShannonDulin (https://twitter.com/ShannonDulin)
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    51 m
  • Episode 417 - "Who are you?"

    Episode 417 - "Who are you?"
    Jul 11 2025
    We're back from summer break - Shannon taught field camp, John travelled for work and got hailed on, and more! John’s Hail Storm (https://youtube.com/shorts/aLb-P7HFL-Y) Fun Paper Friday How does modern AI stack up against a cognition test designed for humans? Dayan, Roy, Benjamin Uliel, and Gal Koplewitz. "Age against the machine—susceptibility of large language models to cognitive impairment: cross sectional analysis." bmj 387 (2024). (https://www.bmj.com/content/bmj/387/bmj-2024-081948.full.pdf?ref=labnotes.org) Contact us: Show Support us on Patreon! (https://www.patreon.com/dontpanicgeo) www.dontpanicgeocast.com (http://www.dontpanicgeocast.com) @dontpanicgeo (https://twitter.com/dontpanicgeo) dontpanicgeocast@gmail.com John Leeman - www.johnrleeman.com (http://www.johnrleeman.com) - @geo_leeman (https://twitter.com/geo_leeman) Shannon Dulin - @ShannonDulin (https://twitter.com/ShannonDulin)
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    1 h y 5 m
  • Episode 416 - "Life is a Physics Exam"

    Episode 416 - "Life is a Physics Exam"
    May 16 2025
    This week we talk about how we power our instruments in the field and all of the weird and wonderful ways they fail. Including getting turned into charcoal by lightning! Fun Paper Friday Why does ketchup splatter? Find out! Arstechnica Article (https://arstechnica.com/science/2022/11/the-physics-of-keeping-those-last-bits-of-ketchup-from-splattering/) Cuttle, Callum, and Christopher W. MacMinn. "Dynamics of compression-driven gas-liquid displacement in a capillary tube." Physical Review Letters 130.11 (2023): 114001. (https://arxiv.org/pdf/2112.12898) Contact us: Show Support us on Patreon! (https://www.patreon.com/dontpanicgeo) www.dontpanicgeocast.com (http://www.dontpanicgeocast.com) @dontpanicgeo (https://twitter.com/dontpanicgeo) dontpanicgeocast@gmail.com John Leeman - www.johnrleeman.com (http://www.johnrleeman.com) - @geo_leeman (https://twitter.com/geo_leeman) Shannon Dulin - @ShannonDulin (https://twitter.com/ShannonDulin)
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    55 m
  • Episode 415 - "Fiat 500 Volcanic Bomb"

    Episode 415 - "Fiat 500 Volcanic Bomb"
    Apr 25 2025
    This week we talk hail, Vesuvius, volcanic bombs, and vitrified brains. Scandone, Roberto, Lisetta Giacomelli, and Mauro Rosi. "Death, Survival and Damage during the 79 AD Eruption of Vesuvius which destroyed Pompeii and Herculaneum." J. Res. Didact. Geogr 2 (2019): 5-30. (https://www.researchgate.net/publication/337768981_Death_Survival_and_Damage_during_the_79_AD_Eruption_of_Vesuvius_which_destroyed_Pompeii_and_Herculaneum) Fun Paper Friday An amazing new finding shows that brains were vitrified or turned to glass during the nearly 2000 year old eruption of Vesuvius. Giordano, Guido, et al. "Unique formation of organic glass from a human brain in the Vesuvius eruption of 79 CE." Scientific Reports 15.1 (2025): 5955. (https://www.nature.com/articles/s41598-025-88894-5.pdf) Mt Vesuvius (https://en.wikipedia.org/wiki/Mount_Vesuvius) Plinian (https://en.wikipedia.org/wiki/Plinian_eruption) Contact us: Show Support us on Patreon! (https://www.patreon.com/dontpanicgeo) www.dontpanicgeocast.com (http://www.dontpanicgeocast.com) @dontpanicgeo (https://twitter.com/dontpanicgeo) dontpanicgeocast@gmail.com John Leeman - www.johnrleeman.com (http://www.johnrleeman.com) - @geo_leeman (https://twitter.com/geo_leeman) Shannon Dulin - @ShannonDulin (https://twitter.com/ShannonDulin)
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    48 m
  • Episode 414 - "Closed Because of Landslide"

    Episode 414 - "Closed Because of Landslide"
    Apr 18 2025
    Shannon's class took a trip to study catestrophic sedimentation... and they found it! John switched back to a Mac after 5 years. Join us for these and other exciting updates! Fun Paper Friday Find out how alcohol and an eye puffer machine cominbed with magnets can teach us about where our motor skills reside in the brain. Johansson, Fredrik, et al. "Alcohol impairs learning and timing of conditioned eyeblink responses." Brain Research 1854 (2025): 149545. (https://www.sciencedirect.com/science/article/pii/S0006899325001039) Contact us: Show Support us on Patreon! (https://www.patreon.com/dontpanicgeo) www.dontpanicgeocast.com (http://www.dontpanicgeocast.com) @dontpanicgeo (https://twitter.com/dontpanicgeo) dontpanicgeocast@gmail.com John Leeman - www.johnrleeman.com (http://www.johnrleeman.com) - @geo_leeman (https://twitter.com/geo_leeman) Shannon Dulin - @ShannonDulin (https://twitter.com/ShannonDulin)
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    1 h y 5 m