biotechScienceScientists Grew Mini Human Guts Inside MiceIdeasCrispr Wants to Feed the WorldScienceThis Startup Is Using AI to Unearth New SmellsBusinessThe Battery That Never Gets FlatIdeasMicrobial Cocktails Are More Than a Gut FeelingScienceThe US Just Greenlit High-Tech Alternatives to Animal TestingIdeasA Drug to Treat Aging May Not Be a Pipe DreamIdeasThe Magic of mRNA Will Push Medical Advances for EveryoneScienceHere’s What’s Next for Pig Organ TransplantsScienceA More Elegant Form of Gene Editing Progresses to Human TestingScienceThe Crispr Baby Scientist Is Back. Here’s What He’s Doing NextScienceElectronic Second Skins Are the Wearables of the FutureScienceThis Low-Cost Test for Hearing Loss Lives on a SmartphoneScienceThe Era of One-Shot, Multimillion-Dollar Genetic Cures Is HereScienceA Proactive Way to Detect Cancer at Its Earliest StagesScienceTurns Out Fighting Mosquitoes With Mosquitoes Actually WorksScienceThis Personalized Crispr Therapy Is Designed to Attack TumorsScienceThis Gulp of Engineered Bacteria Is Meant to Treat DiseaseScienceThe Sci-Fi Dream of a ‘Molecular Computer’ Is Getting More RealScienceHow to Detect a Man-Made BiothreatScienceThe Quest to Treat Binge-Eating and Addiction—With Brain ZapsScienceLab-Grown Human Brain Tissue Works in RatsScienceA Bold Effort to Cure HIV—Using CrisprScienceThe Era of Fast, Cheap Genome Sequencing Is HereMore Stories