Altered Pinna [study]

  Unlike dogs, cats, rabbits, bats, donkeys, zebras, gerbils and very many other mammals, most humans have great difficulty in independently orienting their outer ears ( pinnae ) towards sounds of interest. But what if we could?   This study demonstrates that by opening and closing the human pinna, we can change the direction of […]

The role of flapping elephant ears in heat dissipation

Elephants are big, and they get hot. Especially in Africa. Thus, from the elephant’s point of view, there’s sometimes an urgent necessity to dissipate excess heat. Some investigators have suggested that flapping their large ears (strictly, their ‘pinnae’) could provide a significant heat-loss mechanism. (e.g. Buss, I. O., and Estes, J. A., 1971, ‘The Functional […]