Stuff You Should Know: Don't Be Dumb: Blue Blood
5 years ago
68
Have you ever heard that the blood in your veins is blue and turns red when it's exposed to oxygen in the air? This couldn't be wronger. Josh Clark explains why your veins sometimes look blue.
Loading comments...
-
7:01
HowStuffWorks_Culture
4 years agoStuff You Should Know: Internet Roundup: Egg Rationing in Texas & More Macramé
13 -
2:29
HowStuffWorks_Culture
3 years agoStuff You Should Know: Don't Be Dumb: What Are the Most Beautiful Words in the English Language?
57 -
1:41
KNXV
3 years agoTax season changes you should know
116 -
3:06
WEWS
3 years agoHere's what you should know about MRNA vaccines
5.22K15 -
13:55
CarmenGilFraguada
3 years ago $0.13 earnedEVERYTHING YOU SHOULD KNOW ABOUT A PSYCHOLOGY DEGREE
4812 -
1:52
Reuters
3 years agoFive things you should know about Stacey Abrams
83414 -
3:44
WFTX
3 years agoWhat You Should Know About Amendment 4
443 -
9:33
Killing Time With Norman
3 years ago $0.01 earned4 Discontinued Christopher Ward Watches You Should Know
85 -
10:06
bigcitymom
3 years ago $0.01 earnedWhy should you know the GAPS Diet
118 -
1:58
HowStuffWorks_Science
3 years agoStuff of Genius: Charles Drew and the Modern Blood Bank
10