Examination of the rings of giant California sequoias, along with other contemporaneous physical evidence, provides an understanding of certain climatic changes in the classical world and suggests some surprising determinants of Greco-Roman social and political history. Page 19.
Eddy, Samuel K.
"Climate in Greco-Roman History,"
Syracuse Scholar (1979-1991): Vol. 1
, Article 5.
Available at: http://surface.syr.edu/suscholar/vol1/iss1/5