Mucus is gross, but it does a lot of good in humans and the many other animals that produce it. Learn more in this episode of BrainStuff, based on this article: https://health.howstuffworks.com/human-body/systems/respiratory/mucus.htm
BrainStuff
2,436 clip(s)
Did the Maya Civilization Fall Because of Climate Change?
BrainStuff Classics: What's the History of Nail Polish?
BrainStuff Classics: Do Dogs Get Embarrassed When We Put Them in Costumes?