From SciShow.

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If you’re a content creator on YouTube, thumbnails are super important because they help entice people to click on a video. But the fact that you also have thumbnails *on your thumbs* is also mighty helpful, whether you’re a content creator, a human watching that content, or even a squirrel. Why do we have nails instead of claws, and how did our ancestors evolve into having them?

Hosted by: Madelyn Leembruggen (she/her)

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Sources: https://docs.google.com/document/d/e/2PACX-1vTCJkqk8dRV1tv5ksygmYBDxREZD4_0uPTJp7r9MnoAXl6FLLRyJR4doMjZbN7EsVESsUJIYOW6GgA2/pub