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.


  • Poster Image

    Episode 50 - "Some serious geometric voodoo" Projections Part 2

    January 8th, 2016  |  53 mins 39 secs

    Last week we told you about many different map projections and talked about why they are all wrong. This week we’ll discuss a few of our favorites, why we like them, and when they fail us. We also have another Star Wars themed Fun Paper...

  • Poster Image

    Episode 49 - "Would it blow your mind if I told you Africa is 14x larger than Greenland?"

    January 1st, 2016  |  45 mins 7 secs

    Maps are useful things, but it turns out that projecting a 3D object on a 2D map can cause a lot of unexpected problems. They even inspired an . This week we explore maps and map projections. We also chat about machine learning as part of...

  • Poster Image

    Episode 48 - "You know you're going to be inspired" AGU

    December 25th, 2015  |  42 mins 50 secs

    We want to wish you happy holidays and invite you to join us while John was at AGU. This show should have been released a week ago, but John got very ill at AGU and took several days to recover. Thank you for the well wishes and sticking with...

  • Poster Image

    Episode 47 - "That's nerd points" Holiday Gift Guide

    December 11th, 2015  |  1 hr 53 secs

    The holiday season is approaching and you may be wondering what to get that geoscientist or science nerd in your life. Look no further as we discuss our recommendations on the Don’t Panic gift guide!

  • Poster Image

    Episode 46 - "The sweet sounds of square wheels rolling" Posters Continued

    December 4th, 2015  |  48 mins 43 secs

    This week we continue our discussion of posters, presentation, and talk about splashing around with our fun paper Friday!
    Graphing Software

    Poster Tools

    Fun Paper Friday
    This week we talk about urine...

  • Poster Image

    Episode 45 - Revisit "What if you calibrated your candles differently?"

    November 27th, 2015  |  1 hr 27 secs

    This week we re-visit one of our favorite shows while everyone is outside or in their turkey food-coma here in the US. We also read some listener mail about last week's episode on earthquake magnitudes!
    Time is a very complex subject that you...

  • Poster Image

    Episode 44 - "It's not Richter magnitude!"

    November 20th, 2015  |  53 mins 26 secs

    This week we talk about Bill Nye, earthquake magnitudes, and coffee.
    Bill Nye

    John got to see Bill Nye () talk at Penn State!

    Earthquake Magnitudes

    Challenge is that earthquakes span a huge dynamic range. We measure ground displacements...

  • Poster Image

    Episode 43 - “Life should be more than turning off drop shadow defaults”

    November 13th, 2015  |  52 mins 7 secs

    This week Shannon is grading, John is modeling (numerically), and they both are mad about some graphs they have seen.
    Data Visualization

    Make everything bigger than you think it needs to be!


    Ask people...

  • Poster Image

    Episode 42 - "Life, the Universe, and Everything"

    November 6th, 2015  |  43 mins 19 secs

    Shannon was at the meeting in Baltimore Maryland. She also won a raffle there for a notebook and holder.
    The meeting app worked well, but we’re both nervous after the AGU app last year.
    This is episode . A very important number to the...

  • Poster Image

    Episode 41 - "The Nino (Pumpkin Spice Latte Season)"

    October 30th, 2015  |  40 mins

    This week we talk about El Nino, what it is, how it works, and what it means for this winter. We also discuss pumpkin carving injuries on this week’s Fun Paper Friday!



  • Poster Image

    Episode 40 - "Pumpkin Sedimentation"

    October 23rd, 2015  |  31 mins 9 secs

    This week Shannon talks about back to back field trips, broken airplanes, and rain. John relates a story about a strange northeast tradition and shares a traffic related fun paper.
    Shannon’s Trip


  • Poster Image

    Episode 39 - "There are some blow up bubbles" Mars

    October 16th, 2015  |  36 mins 2 secs

    This week we talk about water on Mars and aeroelastic flutter of bird wings.

    John got married with and . Keep an eye on his Twitter feed for more videos soon.
    We have a GSA poster and AGU Talk!


    Water on mars


  • Poster Image

    Episode 38 - "I was kind of crafty about it, switching aisles"

    October 9th, 2015  |  56 mins 36 secs

    This week we interview Kina McAllister to talk about her science activity kits for girls and then talk about the optimal office temperature setting in this week’s Fun Paper Friday!

    Fun Paper Friday

    This week we have a...

  • Poster Image

    Episode 37 - "We solved all those problems, for all time" Open Hardware Summit

    October 2nd, 2015  |  52 mins 36 secs


    president J. Simmons showed new cad/modeling linked tools that they are using to create open thrusters, rockets, etc.

    showed how open hardware in science can save us a bundle think of all the outdated lab equipment sitting around...

  • Poster Image

    Episode 36 - "We're looking at something the size of Connecticut" with Prof. Charles Ammon

    September 25th, 2015  |  43 mins 32 secs

    This week special guest Prof. Charles Ammon joins us to discuss the recent magnitude 8.3 Chile earthquake. We then talk about coffee and how it can move your body clock around.
    Show Links

    Fun Paper Friday


  • Poster Image

    Episode 35 - "So often we disconnect these things" Why study geology?

    September 18th, 2015  |  51 mins 22 secs

    This week we discuss how geoscience can enrich anyone’s life. Join the discussion and then learn about how much cosmic dust falls on us every day!

    John was on talking about SMAP.

    Why Learn Geology