Ok we all get it, they save our lives, and they aren't just a really good Radiohead song. But HOW? Most of us never even need to experience airbags, which is great. But for those of us who do, how do they do their very important job so perfectly and impressively? There's more to airbags than you'd expect, unless you're a chemist and already know this stuff in which case you might not be impressed and that's sad.

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