From tool-using chimpanzees to puzzle-solving capuchins, the primate world is packed with surprising brainpower. But how do the planet’s cleverest monkeys and apes really compare with human intelligen ...

If you matched a Swiss singer against a monkey vocalist in a yodeling contest, the non-human primate would win handily, according to a study published in the journal Philosophical Transactions of the ...

Humans have practiced some form of yodeling since at least the 13th century, when Marco Polo encountered Tibetan monks on his travels who used the vocal technique for long-distance communication. It’s ...