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Season 53 · Episode 4
Landed Wed, 11 Feb 2026 · 21:00 your time · 1 episode · 1h 0m
Season 53, Episode 4 of NOVA aired Wednesday, 11 February 2026 at 9pm ET on PBS.
- S53E04Mammal OriginsUncover the surprising ancient origins of mammals, a story that began long before the dinosaurs' reign. Surveying Earth's tumultuous past reveals how some of our earliest ancestors, the therapsids – creatures that looked like reptiles but were starting to develop mammalian traits – survived multiple global catastrophes. Through remarkable adaptations like burrowing and the emergence of warm-bloodedness, they forged a lineage that persevered against all odds. Fascinating fossil clues and cutting-edge science reveal how a small, resilient group of animals faced extinction events, outlived giants, and ultimately gave rise to the diverse world of mammals we know today, including us.
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Episode 5
Wed 25 Feb · 21:00
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