

Don't Panic Geocast
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.
Episodes
Mentioned books

Mar 5, 2022 • 46min
Episode 321 - "Big Peas"
John and Shannon are tired of the wintery mix weather they've been getting, but at least now we understand what makes it! We also introduce the term "heated fellowship" and talk about if packs of wolves should be introduced to reduce road kill incidents.
Fun Paper Friday
Are wolves the solution to a deer problem?
Raynor, Jennifer L., Corbett A. Grainger, and Dominic P. Parker. "Wolves make roadways safer, generating large economic returns to predator conservation." Proceedings of the National Academy of Sciences 118.22 (2021).
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John Leeman
www.johnrleeman.com
@geo_leeman
Shannon Dulin
@ShannonDulin

Feb 18, 2022 • 43min
Episode 320 - "Hunga Tonga"
The Hunga Tonga eruption is one of the largest eruptions observed with modern equipment. This week we'll dig into what happened, how it was observed, and what we think is next for the island chain.
Fun Paper Friday
In line with the show (for once!) we look at shock waves on Mars... or lack thereof.
Fernando, Benjamin, et al. "Questions to Heaven." Astronomy & Geophysics 62.LA-UR-21-31668 (2021).
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John Leeman
www.johnrleeman.com
@geo_leeman
Shannon Dulin
@ShannonDulin

Feb 12, 2022 • 46min
Episode 319 - "Ions in Solution"
This week it's all about chemistry, not something we say often! We chat chemical weathering and exactly what all those ions mean.
Fun Paper Friday
Leibring, Katharina. "Names of companion animals: Rovers in the onomasticon?." 25th International Congress of Onomastic Sciences, Glasgow 25-29 Aug, 2014. Vol. 5. University of Glasgow, 2016.
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John Leeman
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@geo_leeman
Shannon Dulin
@ShannonDulin

Feb 5, 2022 • 52min
Episode 318 - "Sandstones are Forever"
Weathering is what breaks the Earth down so it can be recycled, this week we dive into the mechanical methods of weathering the surface.
Fun Paper Friday
What feedbacks can penguin poo have on glaciers?
Wang, Peiyan, et al. "Combined effects of glacial retreat and penguin activity on soil greenhouse gas fluxes on South Georgia, sub-Antarctica." Science of The Total Environment 718 (2020): 135255.
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John Leeman
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@geo_leeman
Shannon Dulin
@ShannonDulin

Jan 29, 2022 • 59min
Episode 317 - "Is your tinfoil hat the same as mine?"
There are lots of rumored precursors to earthquakes - everything from dogs acting strange to flashes of light in the sky. This week we take a look at a few of these and discuss how possible or impossible they may be.
Flashbulb Memory Effect
Earthquake Lights
Animal Behavior
Temperature Changes
Gas Emissions
Electromagnetic Changes
Fun Paper Friday
What is hip? When will it be hip again? Will Shannon and John stop saying hip?
Golman, Russell, Aditi Jain, and Sonica Saraf. "Hipsters and the Cool: A Game Theoretic Analysis of Social Identity, Trends and Fads." arXiv preprint arXiv:1910.13385 (2019).
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John Leeman
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@geo_leeman
Shannon Dulin
@ShannonDulin

Jan 15, 2022 • 52min
Episode 316 - "A centimeter is good enough"
This week we dive into differential GPS and WAAS - how we can tell exactly where we are on the planet.
WAAS
Differential GPS
Sparkfun Facet
Fun Paper Friday
What can we learn from a glowing jellyfish brain? Turns out, quite a bit!
Phys.org article
Weissbourd, Brandon, et al. "A genetically tractable jellyfish model for systems and evolutionary neuroscience." Cell 184.24 (2021): 5854-5868.
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John Leeman
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@geo_leeman
Shannon Dulin
@ShannonDulin

Jan 7, 2022 • 50min
Episode 315 - "Tombstones"
Glaciers are huge, weird, and complex systems. This week we talk about some weird glacial terminology and we jump the frog with this fun paper.
Moulin
Serac
Weertman Tombstone
Jökulhlaup
Fun Paper Friday
Astley, Henry C., et al. "Chasing maximal performance: a cautionary tale from the celebrated jumping frogs of Calaveras County." Journal of Experimental Biology 216.21 (2013): 3947-3953.
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John Leeman
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@geo_leeman
Shannon Dulin
@ShannonDulin

Jan 1, 2022 • 1h 7min
Episode 314 - "We Did Pretty Good"
How did you do on your 2021 resolutions? What are you going to do in 2022?
John
More smaller, allowed breaks
Focus and completion of tasks
Hit the Gym
Get an IFR rating
Be less reactive when appropriate
Shannon
say NO even more! Make a priority of staying within my boundaries (70/15/15)
publish the rest of my dissertation (2 articles)
make my webpage(s) and keep them updated
Fun Paper Friday
Marlow, Robin, and Dora Wood. "Ghost in the machine or monkey with a typewriter—generating titles for Christmas research articles in The BMJ using artificial intelligence: observational study." bmj 375 (2021).
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John Leeman
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@geo_leeman
Shannon Dulin
@ShannonDulin

Dec 24, 2021 • 47min
Episode 313 - "Starts with Dyson"
Dyson Sphere
Space Mirrors
Nuke Mars
Fun Paper Friday
Did you get your beauty sleep? If not, others can probably tell!
Axelsson, John, et al. "Beauty sleep: experimental study on the perceived health and attractiveness of sleep deprived people." Bmj 341 (2010).
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John Leeman
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@geo_leeman
Shannon Dulin
@ShannonDulin

Dec 10, 2021 • 49min
Episode 312 - "Atmospheric Deodorant"
This week John and Shannon talk about ways we could use engineering to save or destroy the planet.
Stratospheric Injection
Ocean Fertilization
Increased Weathering
Fun Paper Friday
When it comes to doing dumb things - are men more likley to participate than women?
Lendrem, Ben Alexander Daniel, et al. "The Darwin Awards: sex differences in idiotic behaviour." Bmj 349 (2014).
Contact us:
Show
Support us on Patreon!
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@dontpanicgeo
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John Leeman
www.johnrleeman.com
@geo_leeman
Shannon Dulin
@ShannonDulin