Pivotal evolutionary change helped pave the way for human speech | Reuters
From Grunting To Gabbing: Why Humans Can Talk : NPR
Monkeys Could Talk If Their Brains Were Wired For Language : Shots - Health News : NPR
Howler monkeys : Tigtag
Deep calls or big balls? Howler monkeys are either all mouth, or all trousers
Great ape language - Wikipedia
Talk like you: Scientists discover why humans evolved to talk while other primates can't | Euronews
All Hooting Aside: Did a Vocal Evolution Give Rise to Language? - The New York Times
Evolution of the Vocal Tract (Adaptationist Position) | Language Evolution: Biocultural Evolution
If parrots can talk, why can't monkeys? | Science | EL PAÍS English
What Makes Human Voice Different from Chimps? Simplicity of Throat, Scientists Say | NewsClick
Examples of Howler Monkey Vocalizations and Vocal Apparatus (A and B)... | Download Scientific Diagram
Examining how primates make vowel sounds pushes timeline for speech evolution back by 27 million years
Why apes can't speak like humans - CBS News
Big monkey voice 'means less sperm' - BBC News
Monkeys have vocal chords to speak, lack wired brain- The New Indian Express
Losing parts of our voice box may have helped humans evolve to speak | New Scientist
Your simple throat is the reason you don't sound like a chimp | Science | AAAS
Monkeys Could Talk, but They Don't Have the Brains for It - The New York Times
Would it be possible or desirable to give artificial vocal cords to an ape in order to enable it to speak? - Quora
Midsagittal sections through chimpanzee (left) and human (right) head.... | Download Scientific Diagram
Sound off: Humans have simpler throats than monkeys | A Moment of Science - Indiana Public Media
Human voice boxes simpler than other primates better for speech | SYFY WIRE
Listening to the language of apes - BBC News
