If our planet was full of volcanic dust in the air, would it help if we could "see" Xrays?

How much Xray activity is there normally? How sensitive would an “eye” have to be to see in the xray conditions of earth? Would it help if there was a much higher Xray environment? If so, what kind of sun would put out a lot of Xrays?

Also, how do xrays hurt cells? Does it degrade the ability of the cell to reproduce decent copies? If so, what kind of redundancy would be necessary in order to assure high quality reproductions?