BrainStuff: What Are Eye Boogers?
5 years ago
32
The gunk builds up at the inner corners of our eyes is residue of the stuff the coats and protects our eyeballs all the time. Learn what it’s made of and why it turns to sand overnight.
Loading comments...
-
1:27
HowStuffWorks_Science
3 years agoJoseph Friedman: The Flexible Straw
217 -
3:59
HowStuffWorks_Science
3 years agoBrainStuff: What Is Synesthesia?
85 -
2:57
HowStuffWorks_Science
3 years agoBrainStuff: What Is Fracking?
44 -
2:40
HowStuffWorks_Science
3 years agoBrainStuff: What Is White Noise?
40 -
1:59
HowStuffWorks_Science
3 years agoBrainStuff: What Causes Red Eye In Photos?
10 -
3:05
HowStuffWorks_Science
3 years agoBrainStuff: What Causes Chapped Lips?
109 -
3:47
HowStuffWorks_Science
3 years agoBrainStuff: What Is 'Ranch' Flavor?
32 -
3:17
HowStuffWorks_Science
3 years agoBrainStuff: What Is The Dwarf Planet Ceres?
83 -
4:05
HowStuffWorks_Science
3 years agoBrainStuff: What Is The Magician's Oath?
47 -
4:04
HowStuffWorks_Science
3 years agoBrainStuff: What The Heck Is GDP?
33