Further Reading

See human vocal cords in action.

S. Oosthoek. “Cool Jobs: Wild science.” Science News for Students. Aug. 16, 2012.

S. Ornes. “Elephant songs.” Science News for Students. Aug. 20, 2012

E. Sohn. “Koalas, up close and personal.” Science News for Students. June 18, 2007.

E. Sohn. “News detective: Emily nurses wild animals.” Science News for Students. June 18, 2007.