Don't Panic Geocast artwork

Natural Sciences · John Leeman and Shannon Dulin

Don't Panic Geocast

by John Leeman and Shannon Dulin

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.

Latest episodes

Showing 20 · updated from the feed

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

Aug 28
1 h 09 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

Jun 26
32 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 J

Jun 5
1 h 02 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 strik

May 29
48 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

May 15
56 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 Fo

Mar 28
58 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, Casp

Mar 13
42 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

Feb 6
58 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 Pap

Jan 30
46 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 langua

Jan 10
1 h 01 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 Hu

Nov 7 2025
46 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.

Sep 19 2025
1 h 06 min

Episode 420 - "Tourist Destination" Kamchatka Earthquake

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 pa

Sep 6 2025
46 min

Episode 419 - "Diamonds Everywhere" A States

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 geolo

Aug 8 2025
48 min

Episode 418 - "I like the crystal habit"

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 unp

Aug 1 2025
50 min

Episode 417 - "Who are you?"

We're back from summer break - Shannon taught field camp, John travelled for work and got hailed on, and more! John’s Hail Storm Fun Paper Friday How does modern AI st

Jul 11 2025
1 h 04 min

Episode 416 - "Life is a Physics Exam"

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!

May 16 2025
54 min

Episode 415 - "Fiat 500 Volcanic Bomb"

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

Apr 25 2025
48 min

Episode 414 - "Closed Because of Landslide"

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 upda

Apr 18 2025
1 h 05 min

Episode 413 - "Waterfalls I Have Loved"

Turner Falls, Oklahoma A rare waterfall that grows outward due to travertine deposition instead of eroding backward. Formed by spring-fed Honey Creek flowing through O

Apr 4 2025
57 min

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