Don't Panic Geocast

It's not an exact science.

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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    Episode 390 - "Stretch Aquarium"

    May 24th, 2024  |  30 mins 6 secs

    What is a flume and how do sedimentologists used them to understand depositional systems? This and how likely you are to be bitten by a rattlesnake if you step on it in this summer's first Don't Panic Summer Short!

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    Episode 389 - "FieldVolt"

    May 17th, 2024  |  52 mins 40 secs

    Stop losing power and data in the field. John and Shannon discuss the new FieldVolt open power standard.

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    Episode 388 - "Screaming Eagle"

    May 3rd, 2024  |  1 hr 9 mins

    This week John and Shannon talk about what some of the weird weather radar terms that get thrown around mean and how you can use them to keep up with storms impacting you. Then things get morbid with a mouse experiment that ended in an idiocrasy style extinction.

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    Episode 387 - "Adorable Baby Drilling Rig"

    April 26th, 2024  |  46 mins 55 secs

    John went to the Geoprobe open house to look at drilling rigs and then we discuss the optimum way to plan a large number of Christmas parties.

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    Episode 386 - "Rock Colloid"

    April 19th, 2024  |  55 mins 46 secs

    What's tiny, rocky, and alive? Forams! Learn about forams and what diseases James Bond may get while traveling to study them.

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    Episode 385 - "Father Sky Goes Away"

    April 12th, 2024  |  51 mins 1 sec

    John and Shannon both traveled to see the great eclipse of 2024 and share their experiences this week as well as talk about one of those rare times when ice is not a mineral.

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    Episode 384 - "Glaciers caused the great lakes, now we have them, the end" Alexis Dahl

    April 5th, 2024  |  57 mins 44 secs

    This week we interview YouTube science creator, science writer, and communicator Alexis Dahl to learn about the rocks of Michigan's UP and how scientists can do a better job of sharing what they do.

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    Episode 383 - "Logarithmically Fades Away"

    March 29th, 2024  |  46 mins 26 secs

    This week we see how scientists break down the Earth into 7 or more spheres and why that is and isn't a good idea. We also explore a fun paper about graphene that is just full of crap.

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    Episode 382 - "A world without attenuation would be unbearably noisy"

    March 15th, 2024  |  46 mins

    What can we get from mining the moon? Should we? Who can do it? Why should we do it? That and more in this week's show!

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    Episode 381 - "Desk Sedimentology"

    March 8th, 2024  |  50 mins 12 secs

    This week we talk about new national parks, sticky notes, and empirical evidence about fly fishing.

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    Episode 380 - "Flame out like a bolide"

    March 1st, 2024  |  1 hr 2 mins

    This week we talk about how rocks get magnetic field imparted to them and if scientists are really discovering anything new these days.

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    Episode 379 - "How would you like to buy Brunton?"

    February 23rd, 2024  |  1 hr 12 mins

    This week we're rejoined by the Heerschaps to learn about how they came to own and run Brunton and what's next for the company that is a staple of the geological, recreational, and military navigation world.

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    Episode 378 - "I love the font"

    February 16th, 2024  |  42 mins 6 secs

    We generally don't think of sedimentary rocks when we think of volcanoes, but they are real! Find out why sedimentologists don't have to be bored in volcanic terranes.

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    Episode 377 - "Definitely Panic - Another Oklahoma Earthquake"

    February 9th, 2024  |  49 mins 10 secs

    Oklahoma was rocked by another relatively large earthquake for a mid-continent region. We break it down, compare it to the 2011 earthquake and then talk about the hairy ball theorem.

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    Episode 376 - "Got to get those pizza ovens hot"

    February 2nd, 2024  |  54 mins 25 secs

    This week we tackle the controversial topic of fracking. Learn about how it works and what it does to help get oil and gas out of the ground and into your home.

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    Episode 375 - "Squeeze it shut"

    January 26th, 2024  |  54 mins 2 secs

    This week we keep talking about wells. It's all about casing, cementing, bottom hole assemblies, and wet underwear.