John Leeman
Co-Host of Don't Panic Geocast
John received a B.S. is geophysics and B.S. in meteorology from the University of Oklahoma, then proceeded onto to a PhD in geoscience at Penn State in which he studied slow earthquakes as an experimental rock mechanics researcher. John has worked on gas hydrates experiments at Oak Ridge National Lab as well as worked on telemetry software for NASA JSC. Currently he operates Leeman Geophysical located in Siloam Springs, Arkansas. The company builds custom laboratory equipment as well as educational materials. In his off time John enjoys hiking, brewing beer, restoring antique engines, and flying airplanes.
John Leeman has hosted 106 Episodes.
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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.
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Episode 374 - "Until you Lick It"
January 19th, 2024 | 1 hr 5 mins
How do you drill a hole in the ground? Turns out that drilling wells is more complicated than you might think!
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Episode 373 - "Tastes like Animal Crackers"
January 12th, 2024 | 1 hr 2 mins
This week we range over several topics on our minds while testing out english biscuits per a fun paper a few weeks ago. Also - do cats understand you but just don't care?
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Episode 372 - "The Rumors of My Death" 2024 Resolutions
January 5th, 2024 | 1 hr 13 mins
We're back for the 2024 season after our first ever sabbatical and we're ready to talk science, resolutions, and barbie.