http://www.newsweek.com/monkeys-clues-human-speech-developed-study-1038447

New research on rhesus macaque monkeys revealed new insights into human speech.

Researchers at Rockefeller University studied the macaque monkey brain to find evolutionary links to human communication. The study, published in Neuron on July 12, uncovered parts of the brain of the macaque monkey that could show a common evolutionary origin for human and monkey communication abilities.