Was Napoleon killed by the arsenic in his wallpaper? How did Rasputin survive cyanide poisoning? Which chemicals in our environment pose the biggest threat to our health today? Chemist Emsley offers an account of five of the most toxic elements--arsenic, antimony, lead, mercury, and thallium--describing their lethal chemical properties and highlighting their use in some of the most famous murder cases in history. Emsley also shows which toxic elements may have been behind the madness of King George III (almost certainly a case of acute lead poisoning), the delusions of Isaac Newton, and the strange death of King Charles II. In addition, the book examines many modern day environmental catastrophes, including accidental mass poisoning from lead and arsenic, and the Minamata Bay disaster in Japan. --From publisher description.