In no time at all, that activity creates acid and that starts the whole disease process.

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The 300, 000 litres (66, 000 gallons) of water that the firemen poured on the blaze helped to flush out the acid that had been used in the original papermaking process and which had previously been destroying the books.

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But, in older animals - and, it is believed, humans - the amino acid stimulus prompting synthesis is less effective, and the process slows down.

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It follows him as he travels around the country to perform reconstructive surgery on survivors of acid violence and is told by survivors going through the recovery and reconciliation process.

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Walking through his lab a decade ago, he had an epiphany: He envisioned an entire process by which he could feed corn sugar to lactobacilli that would exude ideal, highly concentrated lactic acid.

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