International Day of the Deaf (International Deaf Day) established in 1951 year, in honor of the founding of the World Federation of deaf (World Federation of the Deaf, WFD). According to statistics, hearing suffers every nine people. His lose as a result of injury, disease or birth defects.
2,500 languages ??on the planet. But there is another form of communication, in recent years, more and more interest to scholars — the language of looks and gestures. World Federation of the Deaf in the 50s to service international events deaf, that is, congresses, symposia, conferences, including sports, has developed Zhestuno — a system of gestures.
In 1760, the Abbe de L'Epe (Charles-Michel de l '