Uploaded January 2025 | Updated September 2026, 2 weeks ago

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Ten thousand years ago, asteroids no longer threatened Earth, dinosaurs were long gone, and humans were thriving. The Ice Age had ended, marking the end of Earth's great catastrophes. Or so it seemed. Suddenly, an entire continent was left desolate. Why did so many animals die 10,000 years ago? Let's uncover the truth about the ancient monsters of North America.

0:00 Introduction to prehistory
0:56 The armored glyptotherium
3:31 North American camels
5:48 Prehistoric giant beavers
8:32 The fearsome dire wolf
11:09 Saber-toothed Smilodon
14:37 The massive short-faced bear
17:11 Mammoths and mastodons