Created April 2011
Gallery of Tree Rings
This section of a longleaf pine (Pinus palustris) was cut from a very eroded stump on the edge of Lake Louise in southern Georgia, U.S.A. (photo © H.D. Grissino-Mayer). The tree rings date back to A.D. 1421! link
1439 Invention of the printing press
1481 Establishment of the...

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