In 20 years of Mental Floss history, we’ve come across some pretty offbeat facts from all spheres of study, from literature and science to behind-the-scenes secrets of major Hollywood productions.

And on this episode of The List Show, Mental Floss editor-in-chief Erin McCarthy is covering 20 of our favorite things we’ve learned. You’ll hear about how lobsters urinate (from their faces), why wombats have cube-shaped poop, and plenty of other tidbits that have nothing to do with animal waste.

Mary Shelley, for example, supposedly hung onto her husband’s heart for a while after he died, preserving the organ (which was somehow still intact after cremation) in a silk-wrapped poem. If you ask us, it’s the perfect type of romantic story to tell on a date, though you might want to save it for at least the third or fourth one.

Press play below to find out about Neil Armstrong’s little-known mirror selfie from the moon, Italy’s fleeting-yet-memorable crusade to ban pasta, and more random facts.

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