Bismuth has long been considered as the element with the highest atomic mass that is stable. However, in 2003 it was discovered to be weakly radioactive: its only primordial isotope, bismuth-209, decays via alpha decay with a half life more than a billion times the estimated age of the universe.lemental bismuth may occur naturally, although its sulfide and oxide form important commercial ores. The free element is 86% as dense as lead. It is a brittle metal with a silvery white color when freshly produced, but is often seen in air with a pink tinge owing to surface oxidation.
President Obama is lifting some restrictions on Cuban Americans' contact with Cuba and allowing U.S. telecom companies to operate there, opening up the communist island nation to more cellular and satellite service, White House press secretary Robert Gibbs announced at his regular news briefing today.
Itâs been a busy few weeks for the half-dozen or so companies licensed to charter flights between the United States and Cuba. In December, President Barack Obama announced the restoration of diplomatic relations with Cuba, and the easing of travel and trade restrictions started in mid-January. Tampa International Airport spokeswoman says that she expects charter operators there to add additional flights to Cuba in the coming weeks, and that GoToCuba.org, a website the airport created to provide Cuba travel information, has seen 1,580 percent more traffic since before Obamaâs announcement in December.