THE TIMES SCIENCE BOOK OF THE YEAR**Shortlisted for the Financial Times Business Book of the Year Award**Picked as a Book of the Year by FINANCIAL TIMES, ECONOMIST and NEW STATESMANA BBC RADIO 4 Book of the Week'A compelling narrative of the human story' TIM MARSHALL, author of Prisoners of Geography'Lively, rich and exciting...full of surprises' PETER FRANKOPAN, author of The Silk Roads_____________Sand, salt, iron, copper, oil and lithium. They built our world, and they will transform our future. These are the six most crucial substances in human history. They took us from the Dark Ages to the present day.They power our computers and phones, build our homes and offices, and create life-saving medicines. But most of us take them completely for granted. In Material World, Ed Conway travels the globe - from the sweltering depths of the deepest mine in Europe, to spotless silicon chip factories in Taiwan, to the eerie green pools where lithium originates - to uncover a secret world we ra