Google Doodle on 30 September is celebrating 220th birthday of Deaf French educator and intellectual Ferdinand Berthier. As per Google, Berthier was one of the 1st advocates for Deaf culture especially in a time when those who had hearing differences were outcaste by society.Here's all you need to know about Ferdinand Berthier-Born in 1803 Saône-et-Loire, France, Berthier remains one of the key activists for