DiscoverAsk Dr. UniverseYour Paw-some Question | Why is snot green?
Your Paw-some Question | Why is snot green?

Your Paw-some Question | Why is snot green?

Update: 2025-04-02
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Purr-haps you'd like a new way to get your claws on science questions sent in by kids like you. That's litter-ally my favorite thing.

Today Cosmo and I tackle a question from William, 7, from the United Kingdom: Why is snot green?

You'll hear:

  • What mucus is
  • What protein makes mucus green sometimes
  • How immune cells trap irritants and stuff that can make you sick

Resources you can use:

As always, submit burning questions at askdruniverse.wsu.edu. Who knows where your questions will take us next.

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Your Paw-some Question | Why is snot green?

Your Paw-some Question | Why is snot green?

Washington State University