The origin and fascinating evolution of “lol.” Plus, it turns out the speed of sound on Mars is different and weirder than anticipated. And some of the researchers behind the discovery of Captain Shackleton’s lost ship are developing a sort of Google Maps for arctic waters.Sponsors:Shopify, Get a 14-day free trial at shopify.com/kottkeIndeed, Get a free $75 credit at Indeed.com/goodnewsLinks:Why We Use “lol” So Much (Vice)The Speed of Sound on Mars Is Strangely Different, Scientists Reveal (Science Alert)Episode about Perseverance's microphones (Kottke Ride Home)Scientists that found Shackleton's lost ship are developing a 'Google Maps for the Antarctic' (BBC Science Focus)Episode about the discovery of Ernest Shackleeton's ship (Kottke Ride Home)Kottke.OrgJackson Bird on TwitterSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.