Tagged: SciShow

Why Do We Smile?

Why Do We Smile?

[INTRO ♪] One of our species’ trademark expressions is the smile. And smiling is a form of communication—it’s not just about how you feel, but also...

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The Viruses That Shaped Humanity

The Viruses That Shaped Humanity

{♫Intro♫} When somebody’s talking about viruses in biology, they’re usually talking about things that make you sick — stuff like the flu virus. And based on...

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