Teachers can create supportive, optimal learning environments through a nuanced use of voice in the classroom.

A variety of health conditions, from Parkinson's disease to Alzheimer's, are linked with changes in how a person speaks and sounds. (Getty Images) Everyone gets the occasional frog in their throat ...

Everyone gets the occasional frog in their throat that makes their voice sound different temporarily. Sometimes a cold or seasonal allergies are to blame, especially when you have that post-nasal drip ...