Lake Geneva to swim at some beaches of the lake; indeed, visibility under water was near zero. By the 1980s, intense environmental pollution (eutrophication) had almost wiped out all the fish. Today, pollution levels have been dramatically cut back, and it is again considered safe to swim in the lake. Major leisure activities practiced include sailing, wind surfing, boating (including water skiing and wakeboarding), rowing, scuba diving and bathing. On a scientific footnote, in 1827, Lake Geneva was the site for the first measurement of the speed of sound in (fresh) water. French mathematician Jacques Charles François Sturm and Swiss Physicist Daniel
French name Such changes have to be made official by a "décret en Conseil d'État" taken by the Prime Minister after approbation by the Council of State. Requests for such changes must be justified by some legitimate interest, for instance, changing from a foreign name difficult to pronounce in French to a simpler name, or changing from a name with unfavorable connotations. French name This article describes the conventions for using people's names in France, including the norms of custom and practice, as well as the legal aspects. In normal polite usage, a person's name is usually preceded by: Since 2013, French