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Published Feb 02 2017

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Overwatch’s Widowmaker is the perfect sniper, an assassin with a heart rate so slow that her skin is blue. But can she really live like that? Kyle has the killer science on this week's Because Science!

And a very special thanks to Marvel Puzzle Quest for sponsoring today’s episode! If you like Marvel and match-3 games, check out Marvel Puzzle Quest, available now on Apple and Android devices. Recruit your favorite Marvel Heroes and Villains to battle your friends and compete in tournaments! http://bit.ly/NerdistMPQ

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Artist: Andrew Bowser

Learn more:
• CYANOSIS: http://bit.ly/2kkqu1C
• HEMOGLOBIN: http://bit.ly/2jOBlNG
• HYPOXIA: http://bit.ly/2kLzYn2
• CYANOSIS DIAGNOSIS: http://bit.ly/2jwgVbj
• BLOOD COLOR CHEMISTRY: http://bit.ly/2kLj3ku