Why Do Veins Look Blue? The Science Behind Human Anatomy’s Most Fascinating Mystery
The first time you notice it is usually in the mirror—those faint, web-like lines beneath the skin, especially on wrists and hands. They’re veins, and they’re blue. But here’s the paradox: human blood isn’t actually blue. Not even close. So why do veins look blue when arteries, carrying the same oxygen-rich blood, appear a stark … Read more
