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Why do our veins look blue when our blood is red?

David Irving
Why do our veins look blue when our blood is red?

This is an article from I’ve Always Wondered, a series where readers send in questions they’d like an expert to answer. Send your question to alwayswondered@theconversation.edu.au I’ve always wondered why our veins are blue, when blood is red? – Alexandra, 28, Melbourne Blood is red, and a surgeon will tell you our veins too are…