"Hair is such an easily changeable feature that -- I think -- we won't be able to even nail down what happened when until we can definitively say how it happens genetically and exactly when those changes happened. We're not there yet, and…"
"I don't care for the expensive tissue hypothesis myself; like the dietary ideas which are found in the aquatic idea it's flawed, IMO.
As for upright posture exposing more body area to sun (except at noon), there's a problem with that…"
"Actually there are a variety of ideas among various aquatic proponents about the time period in question; the biggest problem with that is that over the past few decades they've gotten more vague about that and the extent of water use. They…"
"I actually joined up because I noticed Jo's post on one of my interests.
Yes, hair changes for cooling efficiency plus sexual selection. It's coupled with more eccrine sweat glands, which are what allow us to use persistence hunting as…"
"For quite some time it was thought -- really more assumed, which is always a mistake in science -- that brain growth was a primary reason for human infants' fat, which is pretty much unique in mammals. But it's not actually that. There was…"
"I just joined A/N a few days ago and saw this post; it's something I have some expertise on. I've been researching the evidence surrounding the "aquatic ape" idea for over a decade now to determine whether it's accurate,…"
Hello Jim. What a splendid site you have. Welcome to this friendly meeting-place A/N with its rational thinkers who recognise that gods are fictions and religions were devised to control impressionable people beginning, very sadly, with innocent children.