"Rudolph the Red-Nosed Reindeer" is one of those songs we hear piped into stores constantly during this season, and while we may get tired of it, we assume it’s just a children’s story. But it turns out there’s some real science behind it.

When Dutch and Norwegian traveled to the Arctic to use video-microscope and thermal imaging technology to measure glow from reindeer noses, they found that tiny blood vessels more abundant in the noses of reindeer than in those of humans.

The question we want to know is, how did the lyricist of that song get that information, since science has just discovered it?
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