Babbage: The element-hunters

It is 150 years since Dmitri Mendeleev discovered the periodic table, the innate order underpinning the elements. Kenneth Cukier explores how this simple grid has shaped our understanding of the universe and our place in it. In a laboratory near Moscow the search is on for element 119, but on the other side of the world in California, researchers are hesitant. Is chemistry over?

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