The story of the fifteenth element began in Hamburg, in 1669. The unsuccessful glassblower and alchemist Hennig Brandt was trying to find the philosopher’s stone, a mythical substance that could turn ...

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The periodic table of chemical elements has various elements which may seem ubiquitous, but which ordinary people beyond the world of chemistry probably don’t know much about. One of these is gold, ...

The rare radioactive substance made its way from the United States to Russia on a commercial flight in June 2009. Customs officers balked at accepting the package, which was ensconced in lead ...