Re: Sweating hominids

Marc Verhaegen wrote:

> The patas monkey example (most-sweating non-human primate AFAWK)
> suggests that nakedness has not much to do with sweating.
> Ah? Care to explain it again?

Sure. Evaporation cools the evaporating liquid.
Evaporation is intensified by the flow of air above
the liquid. Fur impedes the flow of air, so it
impedes evaporation and cooling.

Another issue is the ratio of a mass of a hot or
warm object to its surface area. Small object,
such as the patas monkey (body mass of about 5 kg)
cools faster than big object because it has small
ratio of heat stored in the body to its surface.

> We know their anatomy was very different from ours, eg, much shorter legs,
> inverted funnel-shaped thorax, broader pelvis, longer & more horizontal
> femoral necks, etc.

What really matters is whether their anatomy
was optimized for running, walking, tree climbing,
or hauling heavy loads.
.

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