This book serves as an all-inclusive source of comprehensive information regarding the topic of hearing loss. It is a collective effort of authors and researchers from across the globe. It provides updated insights on topics in distinct research fields related to normal hearing and deafness. It also discusses various methods for evaluation of hearing and the relevance of the Gerbil model to age-dependent hearing loss amongst humankind. Parental approaches to childhood deafness and role of early intervention for enhanced treatment of hearing loss have also been provided. Detailed information on the role of diverse environmental influences, including injuries, in affecting deafness has been presented. Additionally, many genes responsible for hearing loss have been examined and the genetics of recessively inherited moderate to rigorous and progressive deafness have also been exclusively covered. The book also details prevalent and emerging therapies for dealing with deafness.