Speech-language pathologists diagnose and treat any disorder related to speech-language communication, with about 50% working in educational services and the rest employed by health care and social assistance facilities.

FORBES: 7. Speech-Language Pathologist

It's not just about a better understanding of communication over the ages, either, as the timeline of a language can also play a useful role in determining the order of pre-history events, such as the movement of populations over a continent.

ENGADGET: Alt-week 2.16.13: robo-rats, a young black hole and a computer that cannot crash