Contents47 chapters1:38Episode overview & show framingPlay→2:01Story 1 begins — 3I/ATLAS interstellar visitorPlay→2:01What 3I/ATLAS is & why it mattersPlay→2:05NASA reopens & releases new imageryPlay→2:20What counts as an interstellar visitorPlay→2:25The third confirmed interstellar objectPlay→2:27‘Oumuamua vs 2I Borisov vs 3I/ATLASPlay→2:35Why ATLAS is much larger than its predecessorsPlay→2:44Elongation, rotation & odd morphologyPlay→2:52Comparison to typical cometsPlay→3:30Ephemeral events — why capturing data mattersPlay→3:45Community mobilization to observe ATLASPlay→4:10Follow-up windows & December 19th notePlay→36:51Story 1 concludesPlay→37:00Story 2 begins — the show’s first forensic storyPlay→37:04True-crime fans get a treatPlay●37:06Maynooth University & Forensic Chemistry paperPlay→37:18The problem: why fired casings lose fingerprintsPlay→37:24Heat-stable residue chemistryPlay→37:27New spectroscopic technique to recover printsPlay→37:29“Who done it?” efficiency gainsPlay→38:00Implications for policing & cold casesPlay→54:24Story 2 concludesPlay→55:02Story 3 begins — Alzheimer’s breakthroughPlay→55:11Max Planck Institute & Univ. of Cologne studyPlay→55:24New immune state in microgliaPlay→55:31Not a new cell type — a new statePlay→55:43Why microglial regulation mattersPlay→55:55The fall of the old “amyloid-only” modelPlay→56:04Beta-amyloid misfolding & clumpingPlay→56:13Neuron death, synapse loss & plaquesPlay→56:31Evidence that plaques aren’t the root causePlay→56:49Neuroinflammation theory risesPlay→58:10Modest success of plaque-clearing immunotherapiesPlay→58:29The “spark vs. fire” model of Alzheimer’sPlay→58:36Something downstream drives the diseasePlay→58:46Immune hyperactivation inside the brainPlay→59:01Genetic evidence — Alzheimer’s risk sits in microgliaPlay→59:14Risk loci active in microglia, not neuronsPlay→59:27Microglia as housekeeping cells — but malfunctioningPlay→59:49Microglia originate in the yolk sac (embryonic origin)Play→1:13:40Regulatory microglia (“T-regs of the brain”)Play→1:14:04Dysregulation leads to runaway inflammationPlay→1:14:22CD28-dependent activation statePlay→1:14:33How this model explains symptomsPlay→1:16:00Emerging treatments targeting microglial statesPlay→1:27:00Episode close & creditsPlay→Show all 47 chapters →From the episodeEP 18Nov 27, 20253I/ATLAS Explained, Forensic Fingerprints & Alzheimer's BreakthroughInterstellar object, forensic leap, and an Alzheimer's immune rethink.Alzheimer'sForensicsAstronomy