<p>A few weeks ago, we got two emails that were so similar and so intriguing we had no choice but to investigate.</p>

A few weeks ago, we got two emails that were so similar and so intriguing we had no choice but to investigate.

Curio: Flies on the bus

Brains On!® is a science podcast for curious kids and adults from American Public Media. Each week, a different kid co-host joins Molly Bloom to find answers to fascinating questions about the world sent in by listeners. Like, do dogs know they’re dogs? Or, why do feet stink? Plus, we have mystery sounds for you to guess, songs for you to dance to, and lots of facts -- all checked by experts.

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Curio: Flies on the bus

Curio: Flies on the bus

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