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BrainStuff Classics: Why Is Our Blood Red?

BrainStuff Classics: Why Is Our Blood Red?

Human blood is red -- yes, even when it's in your body. Learn why -- and why your veins appear blue through your skin -- in this episode of BrainStuff. Learn more about your ad-choices at https://news.iheart.com/podcast-advertisers

Duration: 4 min

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