"Imagine you are below the shark, the shark is swimming and you have the light from the Sun coming down, " explained Dr Julien Claes, a shark biologist from the Catholic University of Louvain in Belgium, and the lead author of the study.

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This social impasse, as reflected in relationships documented by calling records, "had an impact on the political life and the discussions about forming a government, " said Dr. Blondel at the Catholic University of Louvain near Brussels, who led the research effort.

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However, Jacques Donnez and his colleagues at the Catholic University of Louvain, in Belgium, have gone one better, with news that they have overcome this hurdle, and that one of their cancer patients who received an ovarian graft has conceived naturally and is expecting a child at the end of September.

ECONOMIST: Frozen ovaries could help women to stay fertile