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Vladimir Vladimirovich Nabokov (; Russian: Vladimir Vladimirovich Nabokov, pronounced [vla'djimjIr na'bok@f] ( listen), also known by the pen name Vladimir Sirin; 22 April [O.S. 10 April] 1899 - 2 July 1977) was a Russian-American novelist, translator and entomologist.
Nabokov's interest in entomology had been inspired by books of Maria Sibylla Merian he had found in the attic of his family's country home in Vyra. Throughout an extensive career of collecting he never learned to drive a car, and he depended on his wife Vera to take him to collecting sites. During the 1940s, as a research fellow in zoology, he was responsible for organizing the butterfly collection of the Museum of Comparative Zoology at Harvard University. His writings in this area were highly technical. This, combined with his specialty in the relatively unspectacular tribe Polyommatini of the family Lycaenidae, has left this facet of his life little explored by most admirers of his literary works. He described the Karner blue. The genus Nabokovia was named after him in honor of this work, as were a number of butterfly and moth species (e.g. many species in the genera Madeleinea and Pseudolucia bear epithets alluding to Nabokov or names from his novels). In 1967, Nabokov commented: "The pleasures and rewards of literary inspiration are nothing beside the rapture of discovering a new organ under the microscope or an undescribed species on a mountainside in Iran or Peru. It is not improbable that had there been no revolution in Russia, I would have devoted myself entirely to lepidopterology and never written any novels at all." The palaeontologist and essayist Stephen Jay Gould discussed Nabokov's lepidoptery in his essay, "No Science Without Fancy, No Art Without Facts: The Lepidoptery of Vladimir Nabokov" (reprinted in I Have Landed). Gould notes that Nabokov was occasionally a scientific "stick-in-the-mud". For example, Nabokov never accepted that genetics or the counting of chromosomes could be a valid way to distinguish species of insects, and relied on the traditional (for lepidopterists) microscopic comparison of their genitalia. The Harvard Museum of Natural History, which now contains the Museum of Comparative Zoology, still possesses Nabokov's "genitalia cabinet", where the author stored his collection of male blue butterfly genitalia. "Nabokov was a serious taxonomist," says museum staff writer Nancy Pick, author of The Rarest of the Rare: Stories Behind the Treasures at the Harvard Museum of Natural History. "He actually did quite a good job at distinguishing species that you would not think were different--by looking at their genitalia under a microscope six hours a day, seven days a week, until his eyesight was permanently impaired." The rest of his collection, about 4,300 specimens, was given to the Lausanne's Museum of Zoology in Switzerland. Though his work was not taken seriously by professional lepidopterists during his life, new genetic research supports Nabokov's hypothesis that a group of butterfly species, called the Polyommatus blues, came to the New World over the Bering Strait in five waves, eventually reaching Chile. Many of Nabokov's fans have tried to ascribe literary value to his scientific papers, Gould notes. Conversely, others have claimed that his scientific work enriched his literary output. Gould advocates a third view, holding that the other two positions are examples of the post hoc ergo propter hoc fallacy. Rather than assuming that either side of Nabokov's work caused or stimulated the other, Gould proposes that both stemmed from Nabokov's love of detail, contemplation, and symmetry.

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Nabokov never accepted that genetics or the counting of chromosomes could be a valid way to distinguish species of insects,

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Kim Antonie Lode Clijsters (Dutch pronunciation: [kIm 'kleist@rs] ( listen); born 8 June 1983) is a Belgian former professional tennis player. Clijsters is a former world No. 1 in both singles and doubles. Clijsters won 41 singles and eleven doubles titles. She won four Grand Slam singles titles: three at the US Open, in 2005, 2009, and 2010 and one at the Australian Open in 2011.
Clijsters was born in the Flemish Region of Belgium. She is the daughter of Lei Clijsters, a former international footballer, and Els Vandecaetsbeek, a former national gymnastics champion. Lei Clijsters died of lung cancer on 4 January 2009. Clijsters says that she inherited footballer's legs from her father and a gymnast's flexibility from her mother. Kim's younger sister Elke finished 2002 as the ITF World Junior Doubles champion but retired in 2004 after back injuries. Clijsters started playing tennis at age five with her cousins, and her parents took her to watch matches around Europe. Her favourite tennis player growing up was Steffi Graf. In December 2003, Clijsters announced her engagement to Australian Lleyton Hewitt, but their relationship ended in October 2004. She is still affectionately nicknamed "Aussie Kim" by Australians. In October 2006, Clijsters announced her engagement to American basketball player Brian Lynch, who was then playing for Euphony Bree in Clijsters' hometown of Bree. In an interview with Sportweekend (a sports programme on Belgian Flemish television), Clijsters said that she was retiring to start a family. Clijsters and Lynch married privately on 13 July 2007, at 6 am at the Bree city hall. She was married by the mayor, with sister Elke, Lynch's brother Pat Lynch, and both sets of parents present. Clijsters gave birth to daughter, Jada Elle, on 27 February 2008, at 1:35 pm at the Vesalius hospital in Tongeren. On 18 September 2013, Clijsters gave birth to a son, Jack Leon Lynch. In October 2016, she gave birth to her third child, a son, Blake Richard Lynch. The family splits their time, spending autumn in Belgium and summer at their home in Wall Township, New Jersey.

what did Els do for a profession?
former national gymnastics champion.