This book contains 15 articles on applictions of linguistics to various adjacent academic and professional fields all authored by practicing theoretical linguists. Data, methods, and/or theories developed within linguistics are used to solve problems from different areas of study in which language science is needed. The applications range from more recognizable ones such as second language learning and animal communication to novel and unprecedented ones such as humor research, rhetoric and composition, lexicography, politics, American sign language, and undocumented history.