Today's episode covers an explainer on service workers, one of the keys to a new paradigm of web development, progressive web applications. \n\nMain Story\nhttps://news.ycombinator.com/item?id=17773828\n\nRecommended Reads\n1. How to Write Unmaintainable Code (2017)\nhttps://news.ycombinator.com/item?id=17781475\nA sarcastic aproach to explaining good coding practice, worth a look no matter your skill level. \n\n2. Show HN: Map of Related Books for \u201cDesigning Data Intensive Apps\u201d \nhttps://news.ycombinator.com/item?id=17784308\nIf you're into data visualization this is data viz of data design. \n\n3. Two French rivers disappear underground in cracks and sinkholes \nhttps://news.ycombinator.com/item?id=17782892\nCrazy sinkhole issue in France that drained a river disrupting the local ecosystem.