4 Fun Facts about the Human Heart
This organ does a lot more than pump blood. Find out some of its most fascinating attributes.
![heart made of rose petals](https://cdn.mos.cms.futurecdn.net/hnXBiGeyXPThfyaHGzNfPZ-415-80.jpg)
In their new book, The Sublime Engine: A Biography of the Human Heart, the brothers Stephen and Thomas Amidon, one a writer and one a cardiologist, have written what they call a "biography of this remarkable machine" — one full of both scientific and literary information about that bodily organ most commonly represented as a red thing shaped like two ears pressed together.
The brothers sent along some fun facts about the heart:
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