Giraffes only hum in the dark

So cool!

https://www.wired.com/2015/09/giraffe-say-scientists-find-answer/

How many questions did scientist have to wonder about and ask themselves to discover giraffes humming?

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One Comment

  1. Frances
    Posted September 15, 2020 at 4:30 pm | Permalink

    “What’s that infernal humming racket that’s keeping me awake?”

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