It was dirty work, Marie and Pierre Curie's discovery of radium and polonium. To investigate uranium at their Paris laboratory, Marie acquired several tons of pitchblende, a black ore, and the industrial waste product left over when uranium was removed from it. They ground the rock and dissolved it in …
COLUMBIA, S.C. (AP) — Self-declared presidential candidate Kanye West delivered a winding and unconventional campaign introduction speech in which he …
