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Season guide

The Nature of Things: Season 13

10 episodes Premiered Nov 6, 1972 Updated Oct 3, 2026
Previously on The Nature of Things

Season 13 Lore Primer

Key plot threads, lore context, and character stakes you need to remember before diving into this season.

  • ⚡ Directly follows the overarching narrative developments of The Nature of Things Season 12.
  • ⚡ Faction dynamics and core character alliances shift under escalating external stakes.
  • ⚡ Crucial mysteries introduced previously reach key turning points and narrative reckonings.
  • ⚡ Sets up serialized story arcs that build directly toward the climactic season finale.
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Season 13 Episodes

Episode Guide

🛡️ SPOILER SHIELD

Season 13 Progress Shield

Future titles & synopses blurred. Tap "Reveal" on any card to peek.
Binge Efficiency Engine

Season 13: Filler vs. Essential Canon

Filter episodes by narrative weight. Focus on essential mytharc and skip standalone side quests.

50%
50%
Mytharc (5): Crucial lore & season climaxes
Core (5): Character development & subplots
Side Quest (0): Standalone / filler
S13·E2 Mytharc

The Sexes, part 1 of 2

Nov 20, 1972

Examines male and female roles in society and presents a scientific study of the known biological facts about sex differences in humans.

S13·E3 Mytharc

The Sexes, part 2 of 2

Nov 27, 1972

This program looks at hormonal changes during puberty, and the socially originated attitudes leading to differences between the sexes.

S13·E4 Core

Acupuncture

Dec 4, 1972

An exploration of the traditional art of healing as practiced in China.

S13·E5 Core

Think Before You Eat

Mar 5, 1973

A look at the eating habits of Canadians; food and nutrition, the so-called "Well-balanced diet" and problems of overeating are analyzed in this examination of the dangers of abund

S13·E7 Core

Cities for People

Mar 19, 1973

The Nature of Things presents Cities Are For People, originally scheduled for February 19. It deals with new thinking in urban planning to make cities more livable.

S13·E8 Core

Migration: Animals in Cycle

Mar 26, 1973

A look at the migratory habits of birds and animals, with recent findings in animal studies reinforced with fascinating film footage of many species in their natural habitats.

S13·E9 Mytharc

Old Enough

Apr 2, 1973

This half-hour film depicts obvious absurdities, in a subjective interpretation of The Limits to Growth, a 1970 MIT computer study forecasting economic, social and political collap

S13·E10 Mytharc

Recycling: The Garbage Ouroboros

Apr 9, 1973

A comprehensive examination of the form of pollution fast becoming public enemy number one in North America: garbage.

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