We had magic mirrors and magic fans for centuries tho.

Yet we decided to release way more poison and even way more radiation by mining and burning fossil fuels. We just poison larger areas than any nuclear disasters. And with fossil fuels people actually get cancer, and with toxic byproducts, mutations and birth defects.

People in polluted areas die sooner. Except around nuclear disasters sights - the air gets cleaner once all the people are thrown out.