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In a waste ore called pitchblende, a black sludge that came from the peaty forests of Joachimsthal in what is now the Czech Republic, the Curies found the first signal of a new element\u2014an element many times more radioactive than uranium. The Curies set about distilling the boggy sludge to trap that potent radioactive source in its purest form. From several tons of pitchblende, four hundred tons of washing water, and hundreds of buckets of distilled sludge waste, they finally fished out one-tenth of a gram of the new element in 1902. The metal lay on the far edge of the periodic table, emitting X rays with such feverish intensity that it glowered with a hypnotic blue light in the dark, consuming itself. Unstable, it was a strange chimera between matter and energy\u2014matter decomposing into energy. Marie Curie called the new element radium, from the Greek word for \u201clight.\u201d <\/p>\n\n\n\n