The Strange Blue Glow That Saved Lives  Back in 1862, soldiers…

The Strange Blue Glow That Saved Lives 

Back in 1862, soldiers fighting in the American Civil War noticed a strange blue glow on their wounds. It took a couple of High School students to figure out what it was.

Hosted by: Hank Green

Sources:

By: SciShow.
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The Strange Blue Glow That Saved Lives  Back in 1862, soldiers…

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