Radium seventh of a gram of radium. One kilogram of the Earth's crust contains about 900 picograms of radium, and one liter of sea water contains about 89 femtograms of radium. Radium was discovered by Marie Sklodowska-Curie and her husband Pierre Curie on 21 December 1898, in a uraninite (pitchblende) sample. While studying the mineral earlier, the Curies removed uranium from it and found that the remaining material was still radioactive. They separated out an element similar to bismuth from pitchblende in July 1898, that turned out to be polonium. They then separated out a radioactive mixture consisting mostly of two
Discover Financial the Diners Club International network from Citigroup for $165 million. In May 2008, the Federal Trade Commission approved the transaction and it finalized on July 1, 2008. Discover stated that the Diners Club network, which is a major network outside the United States, will be merged with the Discover Network, a major network in the United States, creating an international network for Discover and Diners Club cardholders. Diners Club cards will continue to be issued by Diners Club International licensees. At this time, Discover Bank has no plans on issuing Diners Club branded cards itself. On September 17, 2010, Discover