The monkeys' "ultra-yodels" had frequency leaps that were five times larger than human frequency changes, often exceeding ...

Yodelers of the world, you never stood a chance: Monkeys will ... and even ancient human ancestors, appear to have this special tissue, Dunn said. At some during our evolution, humans seem to ...

who is one of the authors of the study says "they may have been lost during human evolution to promote pitch stability in singing and speech". The study found that not all monkeys are equally good ...

It turns out apes and monkeys possess vocal membranes in their throats that humans lack. Scientists suspect these structures slowly disappeared through evolution to allow for more stable speech. So ...

These membranes disappeared from humans through evolution to allow for more stable speech. These membranes allow monkeys to introduce "voice breaks" to their calls at the same rapid transitions in ...

allow monkeys to introduce voice breaks to their calls. These structures disappeared from humans through evolution to allow ...

Yodellers of the world, you never stood a chance: Monkeys will ... and even ancient human ancestors, appear to have this special tissue, Dunn said. At some during our evolution, humans seem ...