41.   More likely, Dasher says, some radioactive elements may eventually migrate into the Bering Sea through cracks in the flanks of the island deep underwater.

42.   NATO acknowledged last week that the depleted uranium used in allied munitions contains trace amounts of plutonium, a highly radioactive element.

43.   Radioactive elements are slowly seeping from around the Chernobyl nuclear plant into previously uncontaminated areas through the groundwater, a top environment official warned Tuesday.

44.   The gold grabs attention, but the radioactive elements might be the real discovery.

45.   They were injected with a small amount of water containing a radioactive element that enabled the team to measure the amount of energy burned.

46.   Thorium is a radioactive chemical element used in magnesium alloys and in the making of electronic equipment, among other things.

47.   When the snow melts, it is expected to cause heavy flooding, further disseminating the radioactive elements.

48.   Plutonium, an important material in the production of nuclear weapons, is an extremely harmful radioactive metallic element.

49.   Plutonium, used in the production of some nuclear weapons, is an extremely harmful radioactive metallic element.