They promise peace and quiet at the push of a button — but what’s really going on inside your noise-cancelling headphones? In this episode of Earvangelism, we break down how these devices actually work, why they feel so effective in loud environments, and the surprising ways they can both help and harm your ears. Are they the ultimate tool for focus and calm, or could constant use come at a cost? Tune in to find out what the science says — and how to use them wisely.