I met a scientist researching rust and the rust process. It was a little over my head but if you find new tools being sold that don't rust, I'm sure it will be her doing.
Fun fact, did you know that you are rusting, right now? Breathing is rusting, specifically it's oxidisation of iron in your blood. It's how your blood carries oxygen around your body.
I thought it was just (or mostly) partial pressure of O2 when it comes to hemoglobin? It's been about 15 years since I was in school so I might remember wrong.
"Carbon dioxide increases hydrogen ion concentration and lowers tissue pH. As a consequence, hemoglobin’s affinity for oxygen decreases and oxygen release to tissues is facilitated."