Summer's here. Time for a cool treat. So, you grab a popsicle from the freezer. Ahh ... that's better. Until, out of nowhere, a sharp sudden pain rushes to your forehead. You've got brain freeze!

We talk with neuroscientist Caroline Palavicino-Maggio about the science behind these short-lived cold-induced headaches. Plus, some listener mail.

What are your daily science curiosities? Email the show at [email protected].

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