[blam]

Professor Says Mayan Calendar Does Not Portend Earth's Doom (2012AD)

Mike Baillie's tree ring data indicate worldwide catastrophic events at the following dates: 3195BC, 2354BC, 1628BC, 1159BC, 540AD and smaller events at 207BC and 44BC.

[SunkenCiv]

a short excerpt from a short review of the book shown below:

Catastrophes, tree-rings and climate
by Andrew Sherratt

If this seems a long time ago, then remember that in 1908 an impact equivalent to a ten-megaton explosion left a 1.2km crater in Tunguska (Siberia), and that events of this magnitude probably occur with a frequency of between once a century and once a millennium. Worth searching for in the tree-rings. Mike Baillie is a leading dendrocatastrophist who believes he had found them. There are certainly some dramatic and widespread anomalies in tree-ring thicknesses, though many may be associated with volcanic eruptions rather than impacts. Sadly, the hard evidence does not yet make a story. Undeterred, Baillie recruits an amazing mixture of historical records for various kinds of unusual phenomena and their associated mythologies, in a way which goes far beyond any credibility as serious science... but a serious idea still awaits investigation.

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Exodus to Arthur: Catastrophic Encounters with Comets by Mike Baillie