Humans may have been around for a long time, but life has existed for way longer. In this episode of Crash Course Biology, we’ll journey through deep time to uncover the history of life on Earth. We’ll explore the big, game-changing leaps where life diversified, changed, and just plain persisted.

Introduction: How Life Began 0:00
Macroevolution 1:15
RNA & DNA 2:43
The Timeline of Life 3:42
Stromatolites & Fossils 6:03
Dr. Meeman Chang 8:31
Drivers of Macroevolution 10:00
Review & Credits 11:56

This series was produced in collaboration with HHMI BioInteractive, committed to empowering educators and inspiring students with engaging, accessible, and quality classroom resources. Visit https://BioInteractive.org/CrashCourse for more information.

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Watch this series in Spanish on our Crash Course en Español channel here:    • Crash Course Biología   Sources: https://docs.google.com/document/d/1G...

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