Hosted by Lester Nare and Krishna Choudhary, this Season Finale closes out Season 1 with a deep dive into the physics behind fusion’s biggest bottleneck: fast magnetic reconnection. We unpack why classic models predicted reconnection should be slow, why nature (and tokamaks) disagree, and how modern “plasmoid” reconnection helps explain solar flares, plasma instabilities, and the real engineering challenges fusion reactors face. Then we run a full Season 1 recap — our favorite episodes, biggest scientific moments, and the corrections and lessons we’re taking into Season 2.

Summary

• Fusion’s biggest problem — magnetic reconnection, why the Sweet–Parker model breaks down at scale, and how plasmoid instability enables fast reconnection.
• From the Sun to tokamaks — how reconnection drives solar flares, space weather, and plasma confinement limits in fusion devices.
• Season 1 leaderboard — our top episodes and the breakthroughs that stuck: astronomy, biology, AI, quantum, and the history of science.
• Corrections + what’s next — what we fixed, what we learned, and how Season 2 evolves the format.

Hosted by Lester Nare and Krishna Choudhary, this single-story deep dive tells the full story of how humanity uncovered the structure of DNA — and the human tensions that shaped it. From Mendel’s pea-plant mathematics to Rosalind Franklin’s groundbreaking x-ray crystallography, from Cavendish–King’s College rivalries to the famous Photo 51, this episode follows the scientific and ethical arc behind one of the most important discoveries in modern biology.

Summary

• Before DNA — Mendel’s inheritance laws, Miescher’s nuclein, Levene’s early models, and why scientists initially believed proteins carried heredity.
• The turning point — Griffith’s transformation experiment and the Avery–MacLeod–McCarty proof that DNA is the genetic material.
• The physics connection — Schrödinger’s What Is Life? and the idea of an “aperiodic crystal” inspiring Watson, Crick, and a generation of physicists to enter biology.
• Two labs, one race — Cavendish vs. King’s College, Wilkins vs. Franklin, and the clash of personalities, methods, and interpretations.
• Photo 51 — Franklin and Gosling’s pivotal diffraction image revealing the helical structure of DNA.
• The model — base pairing, antiparallel strands, and why the double helix immediately explained replication.
• Recognition & legacy — the 1953 Nature papers, the 1962 Nobel Prize, Franklin’s omission, and Watson’s later controversies reshaping his legacy.

Show Notes

• Mendel (1866) — Pea Plant Genetics
• Griffith (1928) — Transformation
• Avery–MacLeod–McCarty (1944)
• Schrödinger — What Is Life?
• Franklin’s Photo 51
• Watson & Crick (1953)

Hosted by Lester Nare and Krishna Choudhary, this episode spans astrophysics, forensic chemistry, and neuroimmunology. We begin with a deep dive into 3I/ATLAS, only the third confirmed interstellar object to ever pass through our solar system — larger and stranger than ‘Oumuamua and Borisov, with new imagery released as NASA reopened operations. Then we break down a true-crime forensic breakthrough from Maynooth University that reveals how to recover fingerprints from fired bullet casings — a technique that could radically accelerate criminal investigations. And we close with a Max Planck Institute discovery identifying a regulatory microglial state in the brain that may finally clarify why Alzheimer’s develops — and how immune dysfunction, not just plaques, drives the disease.

Summary

• The third interstellar visitor — 3I/ATLAS joins ‘Oumuamua and Borisov as only the third object ever observed entering the solar system from interstellar space, with new NASA imagery revealing structure, trajectory, and compositional clues.

• A forensic chemistry breakthrough — researchers at Maynooth University develop a technique to retrieve latent fingerprints from fired shell casings, combining heat-stable organic residues with spectroscopic imaging.

• A new model of Alzheimer’s — Max Planck Institute scientists uncover a microglial “regulatory” state (a T-reg–like analogue) activated through CD28-dependent pathways, reshaping how the field thinks about plaques, neuroinflammation, and therapeutic targets.

Show Notes

• 3I/ATLAS — Interstellar Object Updates (NASA / JPL)
• Forensic Chemistry: Fingerprints on Fired Casings (Maynooth University)
• Alzheimer’s Microglia Study — Max Planck Institute / Univ. of Cologne