Actually that would make sense as being part of the reason. Hominids lost a lot of their hair roughly around the time that they started using fire, I think I've read.
It also has to be at least partly because the ability for a mammal to cool itself off easily is related to being able to move for a longer period of time. Hominids, back a few million years ago when they first started walking upright, started requiring the ability to walk for long periods of time to carry food.
so hominids walked around with fire to keep warm all day in the African heat? an evenings fire wouldn't result in the loss of fur...loss of fur and the ability to sweat were essential to heat dissipation, homininds are dinural hunters keeping cool during the day's hunting is the driver of adaptation not the cooler evenings...
They made fire mostly to cook food and possibly ward off animals, at first. Today we make fire because it's "pretty" and "fun", but that is probably due to eons of adapting to fire, such that our species no longer abhors fire (as do most animals), but enjoys it. I didn't read venik's post very carefully; now that I do, it doesn't make much sense. My bad
but that's not what venik posted...he claimed it was because of fire we lost fur...venik-"We probably developed the sweat glands because we have shelter and fire to keep us warm, fur is no longer needed."... absolutely sweating was an adaptation to over heating due to endurance needs when hunting in the hottest part of the day...and sweating without fur is more beneficial as wet fur is dangerous in cool to cold evenings due to hypothermia...hominids would need to cool first then dry very quickly...
Yes, I agree. Although, with larger and larger heads that require more and more blood flow, having a bald head could be dangerous in that it could allow too much heat dissipation. Hence human head hair.
probable... hair would protect us from heat/sunstroke/burns and cold....but then there is male baldness to counter that so it could also bit of sexual selection at work as well...
fire was key in digestion...fire breaks down the flesh making it easier to eat with our puny teeth saving calories...easier to digest which save valuable calories as well...kills harmful bacteria and parasites, obvious benefits there...once dried/smoked it can preserved and eaten later....and the protection bit...fire was huge in our evolution...yup, fire became our friend...
it's linked somehow to hormones...it used to be thought it was to much testosterone but the that has been ruled out, men that were given testosterone injections never lost their hair but men who have been casterated don't go bald...so it's still a mystery....it doesn't appear to hamper survival much....
Well I'm 21 and I already have the beginning stages of male pattern baldness. Maybe if I got castrated...hmmm....the costs and benefits of such a situation are tempting Can you source that men who are castrated don't go bald? lol j/k of course
keep it short and it's not an issue that it once was with women....shave your melon if you're lucky enough to have a nice shaped one... I'm one of the lucky ones I inherited my dads hair, he died at 80 with a full head of hair...my brothers weren't so lucky... likely testicular cancer patients...
Read what you just said. Yes, that makes perfect sense. Develop a cooling aid because you're hot. The main reason animals have fur is winter/night. We are exempt from that. Stop trolling.
lions have fur, tigers have fur...building fires at night did not trigger a loss of fur in hominids...lions are not endurance hunters and neither are tigers but some species of hominids were.... keeping cool as a diurnal hunter is the trigger for hair loss, not campfires...and early hominids did not have control of fire if they even used it at all, loss of body hair would have preceeded the control of fire ... correcting erroneous beliefs is now considered trolling? run that by the mods and see how far it goes...
But consider the reverse -- if you and the antelope are being chased by a hungry lion... I'll take the antelope for $50!
Lions and tigers don't make fires or shelters. There goes that "debunking." Making baseless statements is trolling.
neither do chimpanzees and surprisingly they have the same amount of hair as we do, theirs being longer (but not always) and coarser...say what? chimps don't build fires??? ....there is no record/evidence of hominids controlling fire until 230K and 400K years ago(dates are in dispute), DNA research shows hominids lost their fur at least 1.2 million yrs BP if not further back...sooo the evidence as it exists points to hominids going without controlled fire for at least 800k-1million years bp while fur-less....consider yourself thoroughly debunked.... definition Trolling-An "Internet troll" or "Forum Troll" or "Message Board Troll" is a person who posts outrageous message to bait people to answer. Forum Troll delights in sowing discord on the forums. A troll is someone who inspires flaming rhetoric, someone who is purposely provoking and pulling people into flaming discussion. apparently the only person making baseless statements is you....
I've seen baboons about the same size as our more distant relatives drive off lions with a lot dramatics and throwing stones and waving sticks around, lions didn't know what to make of it...endurance would certainly work if the hominids caught sight of the lions early but as you point out often that option wouldn't exist...
Chimpanzees have as much hair as humans? Look me in the eye and tell me this chimp has as no more hair than you do. Trollololololololololololololololollolol For one, I said *shelter* and fire. And two, how in the hell can you expect to know if we had fire 1 million years ago? Saying there's no evidence for that, is akin to saying there's no evidence that the sky was blue back then. It doesn't mean anything. Baseless statements are all on your side. Baseless statements inspire flaming rhetoric. Thus, you are a troll.
now we have it's confirmed you're the one who is childishly trolling here's my post apparently you have reading comprehension abilities "chimpanzees and surprisingly they have the same amount of hair as we do, theirs being longer (but not always) and coarser"....our body hair covers our entire body just as on a chimp, the only difference is length and coarseness... we have essentially the same amount of hair follicles as a chimp.... and when our bodies get it wrong this can result or this-it's called hypertrichosis, there is no increase in hair follicles just size and colour... hmmm. shelter? bears shelter all winter in the northern climes they have a heavy fur coat according to you this shouldn't be, early hominids didn't build shelters any better than other primates do now and caves were very, very, rare and just as likely to be occupied by more dangerous predators.....there was evidence for fire 200K-400K but according to you it's impossible to determine if there was any at earlier dates? tell me how does that compute in your mind? you're completely devoid of archeological knowledge and method therefore making baseless statements with absolutely zero knowledge of the subject... baseless is when you're pulling random ideas out of your butt as you have been....I've an uncompleted archeology degree behind me(career change) and I live with an archaeologist, my comments in regards to archeology are always thought out and based on existing and confirmed evidence...
They say that goosebumps are a left over reflex when we were hairier and the hair stood up when we we scared or riled... http://www.politicalforum.com/current-events/207996-21-foot-croc-captured-phillipines.html
quite possible...we're still just as hairy it's just not as noticeable, some like that on our nose you need a magnifying glass to see...
