You swallow a ton of snot every single day. Welcome to the gross world of mucus.
Head over to Reactions for more snot science!    • What is Your Snot Saying?  
Previous collab with Reactions: http://bit.ly/2jojAsd
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The Conversation: Health Check: what you need to know about mucus and phlegm: http://theconversation.com/health-che...

Popular Science: Why Does Your Nose Run When You're Sick?:
http://www.popsci.com/why-does-your-n...

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Host, Writer, Animator, Edit
Anna Rothschild

Camera, Sound
Annette Choi

Skeletone Deaf b
Music Provided by APM

Special Thanks to Dr. Ralph Metson

GROSS FOOTAGE AND STILLS

Ciliated pseudostratified columnar epithelium of the trachea (respiratory epithelium). Light microscope micrograph.
Shutterstock/Jose Luis Calvo

Woman Digging Nose
Shutterstock/ CHAjAMP

File:Surgical anatomy - a treatise on human anatomy in its application to the practice of medicine and surgery (1901) (14780479334)
Wikimedia Commons/Internet Archive Book Images

Delightful, Jesara
Flickr, Nathan

Day 59, Project 365 - 12.18.09
Flickr/William Brawley

GROSS SFX

Cockroaches
Freesound/StateAardvark­
(used with permission from author)

Squeak Pack/squeak_10
Freesound/Corsica_S

Cough Cough Sniff Sniff
Freesound/harrypeeks

Male Drinking Slurping Aaaaaaaaaaah Small Belch
Freesound/anton

Pfiff Whistle
Freesound/tommorawe

Gross Science is produced by WGBH for PBS Digital Studios