The Key Bridge disaster is yet another reminder of the vulnerability of global shipping.This episode was produced by Miles Bryan and Jesse Alejandro Cottrell, edited by Matt Collette, fact-checked by Laura Bullard and Hady Mawajdeh, engineered by David Herman and Patrick Boyd, and hosted by Sean Rameswaram.Transcript at vox.com/todayexplainedSupport Today, Explained by making a financial contribution to Vox! bit.ly/givepodcasts Learn more about your ad choices. Visit podcastchoices.com/adchoices