Frans de Waal

Nota: Este archivo abarca los artículos publicados por el autor desde el 1 de diciembre de 2008. Para fechas anteriores realice una búsqueda entrecomillando su nombre.

What I Learned From Tickling Apes

Tickling a juvenile chimpanzee is a lot like tickling a child. The ape has the same sensitive spots: under the armpits, on the side, in the belly. He opens his mouth wide, lips relaxed, panting audibly in the same “huh-huh-huh” rhythm of inhalation and exhalation as human laughter. The similarity makes it hard not to giggle yourself.

The ape also shows the same ambivalence as a child. He pushes your tickling fingers away and tries to escape, but as soon as you stop he comes back for more, putting his belly right in front of you. At this point, you need only to point to a tickling spot, not even touching it, and he will throw another fit of laughter.…  Seguir leyendo »

Who Apes Whom

When I learned last week about the discovery of an early human relative deep in a cave in South Africa, I had many questions. Obviously, they had dug up a fellow primate, but of what kind?

The fabulous find, named Homo naledi, has rightly been celebrated for both the number of fossils and their completeness. It has australopithecine-like hips and an ape-size brain, yet its feet and teeth are typical of the genus Homo.

The mixed features of these prehistoric remains upset the received human origin story, according to which bipedalism ushered in technology, dietary change and high intelligence. Part of the new species’ physique lags behind this scenario, while another part is ahead.…  Seguir leyendo »