We Need Voice Training

• Teachers Put Their Voices at Risk in the Classroom, Study Says (Education Week)
  http://blogs.edweek.org/edweek/inside-school-research/2009/10/teachers_put_their_voices_at_r.html
• Teacher Talk Strains Voices, Especially For Women (Science Daily)
  http://www.sciencedaily.com/releases/2009/10/091026132939.htm