I don't often watch this channel, but this video about their (eventually) successful effort to track down the source of an improbable sounding, but much repeated, science meme was pretty interesting. (And yes, the meme has a figure exaggerated by a factor of about 10 - although it still feels hard to believe, really!)
That’s good to know. But even if it’s only one tenth the distance it still proves that the heart is not a pump
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