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Katie Hafner: He told Meitner that where he'd expected to see radium, a heavy metal, he was instead finding barium, a much lighter element.

She had radium - a radioactive substance - sewn into her cervix to try to kill off the tumour.

Researchers have found high levels of radium, a radioactive element that increases the risk of different types of cancer, downstream of the facilities' outlets.

It contained radium, a highly radioactive element, and the stuff was inescapable.

The active ingredient in these drinks was radium, a radioactive element that releases a packet of radiant energy with every atomic decay.