The Nature of ThingsSeason 452004 · 23 episodesEpisodes1Sex, Lies and Secrecy: Dissecting Hysterectomy2Terrible Lizards of Oz3Selling Sickness4Arktika: The Russian Dream That Failed5Shipbreakers6Clot Busters7Killed By Care: Making Medicine Safe8Tale of a Tiny Bird9Apocalypse Cow: The Mad Cow Story (Part 1)10Apocalypse Cow: The Mad Cow Story (Part 2)11Bhopal: The Search for Justice12Forbidden Forest13Passion & Fury: The Emotional Brain: Anger14Passion & Fury: The Emotional Brain: Love15Passion & Fury: The Emotional Brain: Fear16Passion & Fury: The Emotional Brain: Happiness17Fighting Fire with Fire18Being Caribou: Part 119Being Caribou: Part 220Whale Mission: The Last Giants21Whale Mission: Keepers of Memory22Origins of Human Aggression: The Other Story23Five SeasonsSeason 19Season 20Season 21Season 22Season 39Season 40Season 41Season 42Season 43Season 44Season 46Season 47Season 48Season 49Season 50Season 51Season 52Season 53Season 54Season 55Season 56Season 57Season 58Season 59Season 60Season 61Season 62Season 63Season 64Season 65
