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The mishandling of Caster Semanya's case brought the complex issues of fairness with regard to athletes with disorders of sexual development or hyperandrogenism into both public and private debates.

Tree ring dating oldest

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Dendrochronology is the method of scientific dating based on the analysis of tree-ring growth patterns.

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Thomas mentions that this date was obtained by tree ring count.For example, a tree growing near a stream would be less susceptible to the effects of drought.Even the genetic inheritance of a tree plays a role in that it will magnify or retard the above factors.The source of tree information that he is using as evidence comes from Wired Science, which compiled a list of 12 ancient, still-living trees.Thomas states that two of the trees are 'clonal trees', which he states have estimated ages based on presumed rates of outward spreading.Its exact location is currently undisclosed to the public as a protection against vandalism.