Comedian and former environmental scientist Grant Lyon (@grantlyon1) joins Matt and Andy to talk about the Elkhorn Slough Foundation, naked cow science, why reservoirs aren't all good, surgery farts, nightmare machines, sentencing algorithms, a third hominid and Patient Letter O. This episode is brought to you by Curiosity Box by Vsauce. To get your mystery box full of geeky science toys and gear along with a FREE Vsauce beanie, visit curiositybox.com/probablyscience.