Want to learn more about the science of the voice? The following resources are a great place to start:
The National Center for Voice and Speech is one of the leading voice research instituations in the country. It is also home of the Summer Vocology Institute - a program that trains voice professionals in the field of "vocology" (voice habilitation).
The Voice Foundation is a professional organization that advances the understanding of the voice through interdisciplinary research and education. Visit their website for health and science education, articles, and more!