This week we talk about the Messinian Salinity Crisis and if your mom was right about cracking your knuckles.Fun Paper FridayDoes cracking your knuckles destory your joints, improve joint health, or neither? Find out how one man has experiented on himself to find a potential answer.Unger, Donald L. "Does knuckle cracking lead to arthritis of the fingers?." Arthritis & Rheumatism: Official Journal of the American College of Rheumatology 41.5 (1998): 949-950. (https://pubmed.ncbi.nlm.nih.gov/9588755/)Contact us:ShowSupport us on Patreon! (https://www.patreon.com/dontpanicgeo)www.dontpanicgeocast.com (http://www.dontpanicgeocast.com)SWUNG Slack (https://softwareunderground.org)@dontpanicgeo (https://twitter.com/dontpanicgeo)[email protected] Leeman- www.johnrleeman.com (http://www.johnrleeman.com)- @geo_leeman (https://twitter.com/geo_leeman)Shannon Dulin- @ShannonDulin (https://twitter.com/ShannonDulin)