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nomorepepperoni ago

And here science told me those veins are blue because they contain blood that's had its oxygen absorbed and is en route back to the heart and lungs.

But since the blue veins are easier to see on paler skin, this as an origin of the "blue blood" explanation does make sense.

peatsagayt ago

Science never told you that. You made that made up. Blood is never blue.

nomorepepperoni ago

You get a cookie. Vein color is apparently a matter of what light gets to it through the skin.

http://www.livescience.com/32212-if-blood-is-red-why-are-veins-blue.html