Episode 435 - “FIRE THE LASERS!”
Jezero crater is a really interesting place on Mars - that's why we have landed so many spacecraft in the area. This week we talk about some...
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Science & Medicine
Don't Panic Geocast
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 deve...
Episodes
20 of 437 episodesEpisode 434 - "darkness sometimes brings profundity"
How do you know if your cool new result is real or just some artifact? Is it data or noise, and are those not always so dissimilar? This wee...
Episode 433 - "2 totally useless degrees "
Wildfires can change the landscape and have geologic implications. Also, what makes your sneakers squeak, and what does that have to do with...
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...
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 - wha...
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 session...
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...
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...
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...
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! F...
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 Lorenz...
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...
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...
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! Hurrican...
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 H...
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 s...
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, sce...
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 — an...
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 F...
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 turne...