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Watch Crash Course Biology Season 2 Episode 22 Online

  • 1.5/10
  • COUNTRIES: United States of America
  • Subtitles: English

There’s an immense world of tiny stuff within us and around us—but how do we know about it? In this episode of Crash Course Biology, we’ll discover how we see what we can’t see, thanks to the help of centuries-old tools and more recent technology. Along the way, we’ll learn about the major types of microscopes and how to use a typical light microscope.