Why apes can't talk: our study suggests they've got the voice but not the brains
Monkeys have vocal tools, but not brains, to talk like humans
Mantled howler - Wikipedia
Monkeys Could Talk, but They Don't Have the Brains for It - The New York Times
Evolution of the Vocal Tract (Adaptationist Position) | Language Evolution: Biocultural Evolution
Losing parts of our voice box may have helped humans evolve to speak | New Scientist
How quirk of primate evolution gave humans the voice apes lack | Evolution | The Guardian
Deep calls or big balls? Howler monkeys are either all mouth, or all trousers
Howler monkeys : Tigtag
If parrots can talk, why can't monkeys? | Science | EL PAÍS English
Monkey speak: Macaques have the anatomy, not the brain, for human speech
From Grunting To Gabbing: Why Humans Can Talk : NPR
Monkeys have vocal chords to speak, lack wired brain
Would it be possible or desirable to give artificial vocal cords to an ape in order to enable it to speak? - Quora
Why apes can't speak like humans - CBS News
Monkeys Could Talk If Their Brains Were Wired For Language : Shots - Health News : NPR
Human voice boxes simpler than other primates better for speech | SYFY WIRE
Human Laughter Echoes Chimp Chuckles | WIRED
Why monkeys can't talk—and what they would sound like if they could | Science | AAAS
What's Really Keeping Monkeys From Speaking Their Minds? Their Minds | Science| Smithsonian Magazine
When less is more in the evolution of language | Science
Your simple throat is the reason you don't sound like a chimp | Science | AAAS
