Phosphorus

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<p>What links trade unions with urine, Syria with semiconductors, and bones and bombs? The answer is phosphorus, UCL Inorganic Chemistry Professor Andrea Sella, who is himself engaged in researching new phosphorus based materials, looks at this often rather frightening element. We hear how the health impact of phosphorus on a group of Irish girls changed politics, how the element has been used as a weapon of war and we peer into the future, as chemists break new ground on what might be possible with phosphorus and nanotechnology.</p><p>Photo: BBC Copyright</p>