This week it&#39;s all about rainbows, light, reflection, refraction, and how it&#39;s just like an earthquake! Fun Paper Friday <ul> <li>Have you seen products marketed as &quot;chemical free&quot;? This weeks paper looks at those claims with an analytical eye.</li> <li><a href= "https://ciencias.ulisboa.pt/sites/default/files/fcul/outros/Chemical-Free.pdf"> Goldberg, Alexander FG, and C. J. Chemjobber. &quot;A comprehensive overview of chemical-free consumer products.&quot;</a></li> </ul> Contact us: Show <ul> <li><a href="https://www.patreon.com/dontpanicgeo">Support us on Patreon!</a></li> <li><a href= "http://www.dontpanicgeocast.com"><a href="http://www.dontpanicgeocast.com" rel="nofollow">www.dontpanicgeocast.com</a></a></li> <li><a href="https://softwareunderground.org">SWUNG Slack</a></li> <li><a href= "https://twitter.com/dontpanicgeo">@dontpanicgeo</a></li> <li><a href="mailto:show@dontpanicgeocast.com" rel="nofollow">show@dontpanicgeocast.com</a></li> </ul> John Leeman <ul> <li><a href= "http://www.johnrleeman.com"><a href="http://www.johnrleeman.com" rel="nofollow">www.johnrleeman.com</a></a></li> <li><a href="https://twitter.com/geo_leeman">@geo_leeman</a></li> </ul> Shannon Dulin <ul> <li><a href= "https://twitter.com/ShannonDulin">@ShannonDulin</a></li> </ul>

Episode 258 - "You need a trained geologist"

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.