radium• The early use of X-rays and radium for the treatment of cancer was very much a matter of trial and error.• He developed cancer, and despite radium treatment - after which all his hair fell out - he was declared terminally ill.• One curie is equal to the radioactivity of one gram of radium.• Soon after, Marie Sklodowska-Curie made the crucialdiscovery and isolation of radium, a radioactive element.• The radiumclock will open the First Vault in three months.• And the voice touched radium in me.