Xuan June’s hearing aids have kept her company for pretty much her entire life. They go with her to school, tag along for a ride while she skateboards and sit snugly while she draws and dreams up goth-cute fashion designs.

In this episode, Xuan June is getting fitted for a new pair of hearing aids — and she’s invited Molly to come with her! Together they learn all about how these cool superpowered devices work. Plus, we find out how sound travels and get a chance to guess TWO mystery sounds.

This episode was sponsored by:

Disney Plus Originals (Disneyplusoriginals.disney.com - Disney Plus Originals' Moon Girl & Devil Dinosaur)

Indeed (Indeed.com/BRAINS - Terms and conditions apply. Cost per application pricing not available for everyone.)

Thrive Market (Thrivemarket.com/brains - For 30% off your first order, plus a FREE $60 gift.)

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How do hearing aids work? 38:32

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How do hearing aids work?