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Watch Crash Course History of Science Season 1 Episode 20 Online

  • 2/10
  • COUNTRIES: United States of America
  • Subtitles: English

It's Earth Science time!!!! In this field, natural philosophers were asking questions like, what’s up with fossils? Are they the remains of extinct organisms? Or are they so-called “sports of nature”—rocks that just happen to look like living things but don’t /mean/ anything? And most importantly, how old is… everything?