David Keys found evidence for the climate change in dendrochronology--the study of patterns of tree rings to provide accurate historical dates. In 535/536 there was almost no tree growth, showing that the climate went haywire. A few documentary sources also point to a year or more of the sky being darkened and the sun paler than the moon.

The author's purpose in this book is threefold: to identify a possible source for this disaster, in a massive volcanic explosion between Java and Sumatra; to point to the likelihood of something similar happening again, with equivalent consequences; but most of all, to examine the impact of this climatic disaster on history.

This, the main part of the book, is the most fascinating, though also perhaps the weakest part of his argument. Keys traces the fall of the Roman Empire and consequent rise of Byzantium, the birth of Islam and many other major changes as powerful nations and civilisations crumbled or were overrun by invading cultures in Europe, Asia, the Far East and central and South America. Even the retreat of the British and the triumph of the Anglo-Saxons is tracked back to the fall-out from the volcano. Some of his arguments are very persuasive, though there are also many weak links, what ifs and maybes--but at least he is honest in expressing these.

However valid or invalid his main thesis, this book provides a splendid worldwide overview of 6th century history, and is valuable for that in itself. --David V Barrett

Amazon.co.uk Review
British TV viewers may have seen a Channel 4 documentary in July 1999 about a catastophic climate change in the year 535/536 AD. The documentary was based on this book, written by the archaeology correspondent for the Independent newspaper.

David Keys found evidence for the climate change in dendrochronology-- the study of patterns of tree rings to provide accurate historical dates. In 535/536 there was almost no tree growth, showing that the climate went haywire. A few documentary sources also point to a year or more of the sky being darkened and the sun paler than the moon.

The author's purpose in this book is threefold: to identify a possible source for this disaster, in a massive volcanic explosion between Java and Sumatra; to point to the likelihood of something similar happening again, with equivalent consequences; but most of all, to examine the impact of this climatic disaster on history.

This, the main part of the book, is the most fascinating, though also perhaps the weakest part of his argument. Keys traces the fall of the Roman Empire and consequent rise of Byzantium, the birth of Islam, and many other major changes as powerful nations and civilisations crumbled or were over-run by invading cultures, in Europe, Asia, the Far East, and central and South America. Even the retreat of the British and the triumph of the Anglo-Saxons is tracked back to the fall-out from the volcano. Some of his arguments are very persuasive, though there are also many weak links, perhapses and maybes--but at least he is honest in expressing these.

However valid or invalid his main thesis, this book provides a splendid worldwide overview of 6th century history, and is valuable for that in itself. -- David V. Barrett --This text refers to an out of print or unavailable edition of this title.

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