Happy Day News — 2026-07-23

1. Lab-grown mini brains may predict which Alzheimer’s treatments will workMedical breakthroughhttps://www.sciencedaily.com/releases/2026/07/260721000844.htm2. Teen Trusts His Instincts and Saves Crash Victim Just in TimeCommunity heroismhttps://www.sunnyskyz.com/good-news/6261/Teen-Trusts-His-Instincts-and-Saves-Crash-Victim-Just-in-Time3. NASA’s Juno Takes Temperature of Jupiter’s Fiery Moon IoSpace explorationhttps://www.nasa.gov/missions/juno/nasas-juno-takes-temperature-of-jupiters-fiery-moon-io/4. What We’re Reading: Saving One Centuries-Old Tree at a TimeEnvironmental winhttps://reasonstobecheerful.world/what-were-reading-saving-trees-japan/5. Finding their (grass)rootsCommunity achievementhttps://www.positive.news/society/finding-their-grassroots/