the iron pillar at Qutb that STILL hasn't rusted — and the updated explanation is weirder

Delhi's iron pillar. 98% pure iron, 1600 years old, standing outdoors. doesn't rust. this is real and documented and still not fully explained. the standard updated explanation from IIT Kanpur researchers (around 2002-2003) is that a thin layer of iron hydrogen phosphate hydrate formed on the surfac……