The History of Naked Sweaty and Colorful Skin in the Human Lineage
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- Опубликовано: 10 апр 2017
- (4:17 - Main Presentation) Skin is the primary interface between ourselves and our environment. Nina Jablonski, Pennsylvania State University, looks at what makes our skin unique and, perhaps, more important than we realize. Recorded on 02/28/2017. [4/2017] [Show ID: 32129]
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This very knowledgeable lecturer had one of the best speaking voices I've ever heard. Her enunciation and grammar are near perfect. Don't even know why they needed subtitles. Excellent talk overall!
Good for foreigners!
I love talks where people really know their stuff. Great talk.
Excellent talk and not once was it a black or white issue. It was the best explanation of different skin tones that I have ever heard. Wonderful talks and made perfect sense. It might have been an hour but it went by so quickly.
Dr. Jablonski has won another fan in my case. Her deliberate pace of delivery and careful enunciation work well with my download speed.
Amazing presentation. I like that Nina is so positive when she describes every little thing. I share her view that human evolution is beautiful and wonderful!
Very nice, very informative lecture delivered exceptionally well.
This was definitely time well spent for me at least. Thank you for producing the work.
Thank you, Dr. Jablonski,
This was Very Informative and made my day.
Dr. Nina Jablonski, thank you very much fo0r this lecture. I enjoyed not only the content, but your gestures, the kindness of your manners and voice. You are a nice person.
Completely fascinating. The depth of her knowledge of the subject made it even more interesting.
Thanks for adding the captions. Great presentation.
Thank you for an excellent lecture, one of the best I have ever heard. Connected the dots wonderfully.
Absolutely fascinating ... and I really appreciate that her presentation is so conversational, making it much easier for non-scientific types like me to understand
Brilliant and enjoyable presentation. I never watched so important and complicated human aspect as color skin in a manner so masterly explained. I never understood very well how UVR plays a key role in vitamin D and complex B yielding and the effect over the color skin until now. I recommend to everybody to watch and understand Dr. Jablonski.
Wonderful lecture. Thank you for posting!
Excellent. It is wonderful to listen to a great mind who knows how to communicate to people of different intellectual levels. Thank you
Excellent presentation! Human skin is amazing in all its capabilities.
Very interesting topic.Great lecture.
This video is in my "essential playlist" and is one of my must watch vids that I share constantly.
So clear and concise .... I could listen to her all day. She has such an effective way of communicating complicated ideas - so successful, that she can enlighten someone as "slow" as myself. Wonderful lecture - so appreciate this being posted and shared. When I think of the damage and plight of racism - understanding this would easily unravel this prejudice for those able/wishing to be informed. Thanks!!!
That FLY! I became obsessed.
lol... it kept moving...
@@IR240474 lol!!!
Anyone remember that episode of Breaking Bad? The whole episode was Walter trying to catch a fly in his meth lab facility.
What an amazing topic! I am fascinated by the complexity of evolution in human skin pigmentation, a lot of people should watch this lecture specially when it is said that “skin pigmentation is independent from other physical traits”. I hope seeing more lectures from such an amazing investigator.
Intro ends at 4:10
Thanks! :-)
Just found this talk. Fantastic and wonderful.
This was an excellent lecture; I wish all researchers shared Dr. Jablonski's ability to present information in such an engaging manner. Her tone of voice, pacing, and word choice made already interesting subject matter all the more enjoyable.
However, I must disagree re: her advice on folate 1:20:54 . I would encourage everyone reading this to track their diet using the cronometer app for a week, even if you do not have a specific health concern. It requires some effort (and a kitchen scale) but it is a highly informative experience. I'm a 'health nut' so I use cronometer every day. I've found my top sources of folate are broccoli, lentils and other pulses, romaine lettuce, spinach and asparagus. It is interesting to note that although spinach and swiss chard are closely related plants, swiss chard is not a rich source of folate. Also, beets contain more folate per weight than beet greens. On the other hand, eating a variety of leafy greens is very health promoting and good for protection against UV damage; there's an expression in the South, 'greens give you color' - and I've found that swiss chard and beet greens give my pale skin that golden tone more than other vegetables.
Enfant d'Omelas don’t take this offensively but as a self proclaimed health nut it is more than likely that you are way over doing it on the folate or other vitamins compared to what is actually needed. So I don’t think you necessarily disagree with her so much as have a different opinion then what her facts say. I will also add that folate is most important in your life when you are trying to become pregnant and when you are pregnant. All that extra that you throw into your body may or may not be doing you any good. Only time will tell. And genetics and exercise also have a lot to do with that as well. And running marathons are bad for your heart. Just a couple miles is optimal. But maybe you already knew that.
Probably my favorite lecture.
Fascinating presentation and engaging speaker. Thank you.
Great lecture! Very interesting.
She is brilliant I love her lectures.
most clear and scholarly presentation on evolution human development and clinical understanding and social consequences of Doctors of Color science.
btw. I am a carnivore as well. I just became one fully a year ago. But I should have always been one. I do a somewhat “dirty” carnivore elimination diet. I eat eggs, cheese and some milk products. (probably should eliminate milk stuff, cheese as well) But Now I am much, much healthier. My trying to be a grain and seed and vegetable eater primarily as taught caused all kinds of autoimmune problems. Weird thing is the veg, grains, seeds I hated as a kid were the worst ones for me! My body tried to tell me not to eat beans, tomatoes, peppers, eggplants, onions, garlic, some other spices, etc! Eating all those plant toxins, plus high carbs (standard American poor people’s diet)caused terrible issues, many life-long!
What is now much better :
my blood pressure
my life-long anemia
my life-long thyroid issues (both low and high)
my indigestion, backwash, gas bloating
My constant bad chest pains from probable congestive heart disease
(doctor thought so, and ordered every test in the book but no insurance so I had to figure out how to cure myself)
Chronic fatigue
Arthritis
insomnia
constant migraines (ER once a year!) (sometimes 4-7 days long)
Joint problems
back pain (was by 11:00 am daily)
gout
osteophytes (stopped growing, now dissolving a bit)
my nightmares
life-long constant food craving ( like crack cocaine strength cravings)
What is better but not gone:
asthma
allergies
fibromyalgia cramps (less frequent less often, I have previously had up to 4+ hours long severe thrashing, screaming leg cramps multiple times in one day,week etc) This is been the best winter/cold weather season in a decade for me!
Honestly I longed for death in a sense because I was also one of those people who needed to pretend that I was well and healthy. I tried so hard and as I was afraid-people really turned on me meanly as my small whines became larger medical complaints. Humans are very intolerant of the sick. Name calling and accusations of laziness are rampant. If I had given up altogether no one would have taken care of me, so I struggled on-pushing myself way too hard. It took me almost dying to make me wake up fully to all this. I thought I was gonna die before Xmas 2018 and was waiting for a big heart attack (I thought I might have had two small ones already) I planned my funeral but Set myself a goal that if I lived thru Xmas I would figure out how to cure myself if I could. Xmas-April 2019 I tried various “healthy” diets vegetable juicing was basaad for me. delicious but Veganism nooo! Tried Keto but still had issues with mental food craving like a drug craving.
What is not better:
My PTSD from childhood extreme abuse
my teeth. (big issues from childhood malnutrition)
What is also gone now-90 lbs. But that was a minor symptom in comparison to my other health issues.
Might I suggest good old mary jane for your PTSD. You can always give it up if it doesn't work.
Devil's Advocate you can suggest. I am afraid I would react against it. I react to iced teas sometimes even.
Great lecture!!
Very interesting talk on this subject.
I watched all of her seminars so intelligent
Beautifully spoken.
Thiis makes absolute perfect sense. A great lecture.
This makes no sense at all, the world-renowned geneticist David Reich has debunked all her speculative garbage. "White-skinned" people evolved in hot climates not cold.
@@aevans-jl9ym Where does he claim that white people evolved in hot climates? From what I understand, we all came out of Africa originally. While there is variation of darkness in skin pigmentation, indigenous African people are not white.
Amazing lecturer! Thank you, thank you!
What was so amazing about this lecture was how absurd and politically correct it was. The Blackest skin tones constantly be described as" beautiful "😆 LOL.
a. evans you seem like the kind to ask 'why does everything have to be about race' and yet here you are
Grande dame, grande scientifique dans un domaine étonnant. Merci.
Excellent lecture.
Exelclent talk. True eye opener. And I realy enjoyed watching her. She is beautiful and passionate when talking and she has a beautiful smile. I wish I was there.
Awesome conference
Amazing talk!
I am highly suspect of Jablonski's knowledge on certain topics concerning Primates. . She once stated that the forests and ecosystems of the PNW were "Nutritional Wastelands" I hope she knows more about skin pigmentation in humans than she does about primate diets
Do you have a Ph D. in Anthropology ? She is an expert in her field. Somehow, I doubt you have the academic background to refute anything she has said,
Save the European.
This woman is awesome!!! She is cool.
Truly fascinating
This type of subjects-anthropology, archaeology-should be mandatory in all high schools. Notice that any one of these learned a ir fists NEVER use the terms”race” (singular) nor “races” (plural). NEVER.
If we want to ever start at least getting rid of the ugly side of “racism”, we should start teaching these subjects much earlier than college, and make it mandatory. Dump the useless, extinct dinosaur, the many repeated classes about ricks and space, and start teaching the TRUE FACTS about Homo Sapiens and its origins.
And sooner is better than later.
19:20 lecture details
The Real 'Skin in the Game': The History of Naked, Sweaty, and Colorful Skin in the Human Lineage, BERKELEY GRADUATE LECTURE, February 28, 2017.
man this is great
Outstanding lecturer and lecture.
The one guy who knows about Tinder but does not use it laughed. I compensate for loss of hair with a UV protective hat.
Amazing lecture!!!! Really amazing!!!!
I always wondered why humans have armpit and pubic hair, and she answers that very question near the end of the video. Most of us think that this hair is useless, but it isn't!
Excellent !
Thanks
Really enjoyable.
Keep this up. This information, is Liberation.
I do wonder what colour skin becomes when living on Mars, when they can live without spacesuits.
This woman is amazingly clever.
Some people, myself including, have 3 to 5 hairs per follicle (my mother also had this) and I am covered with hair over all of my body except for my face palms and soles. Am I still human?
Was this more than 4 yrs ago? I ask because the professor didn't allude to the role adapting primarily a grain & cereal diet played in skin evolution. In 2015 research stated light skin in humans is roughly 6 to 8k. years old. Cheddar Man discovered in Europe had blues eyes & dark skin which genetically still had the African mutations for dark skin this is why ask was her presentation prior to this discovery dating to 2015?
Great
Skin cancer and reproductivity: it CAN be an evolutionary selective factor if human groups have reached a point where older humans are helping look after the young through the very extended childhood stage. It all goes together. Community, team hunting, family/tribal childrearing, cooking food, technology of tools - all easier with bigger brains. Where the PACKAGE is successful, evolutionary pressure rewards it. We spend too much time specialising as students, and then needing to find some crucial single key factor in our own sphere of research (which justifies our PhD thesis).
I remember back in the (since proven ineffective) days of megadoses of Vit C, etc. that people discovered the danger of taking too much Vitamin D (kidney stones,
confusion or disorientation, muscle weakness, bone pain, weight loss or poor appetite, extreme thirst, frequent urination, and nausea, vomiting, or constipation)
and this lecture makes me wonder whether that effect is more pronounced in people with darker pigmented skin. It would seem so.
A lot of that would depend on where they lived and their diet. Megadoses of any vitamin is usually ineffective at best and downright dangerous at worst, so you do have a point.
People do tend to go overboard. It’s a result of ignorance or partial information. Going overboard with anything is not good.
Enjoyed and found very informative. Just an thought on an early comment, our bipedal stance does not help with "escaping predators" there are no predators we can outrun. If you arn't fast enough in the first 100m, your lunch. On the otherhand our long distance running ability is best placed to hunt. With sweating we can keep cool and continue to chase until the prey can run no more.
Evidence of humans using ochre and the earth for skin application is evident in the cultures of ethnic nations in Africa today.
It wasn't that we did not have the means to produce tailored fitted clothing, we just didn't see the need for it at the time because our skin was adapted to the sun nudity was not sexualised or frowned upon in indigenous African cultures.
What did you see the need for?
@@ianmiles2505 you gone have to ask my 3 years ago self. Unless I rewatch, I can't recall
This was wonderful I learnt so much, but I also have a few questions. Firstly Spanish neanderthals may of had white skin but did North African and Levantine Neanderthals have darker skin? I remember seeing recently they have discovered that Khoisan
races have a variable and random Melanin gene expression that doesn't evolve in different U.V. zones. So whatever shade of colour the parents are the children can be any shade from pale ochre to dark brown to almost black and each child could be different. Kind of like a collective solution to the U.V./folate/vit.D. problem.
@C. Michael You are an idiot. We have BONES to prove neanderthals. We have the neanderthal genome. It is distinct and separate from home sapiens. By the way, all humans alive today except for people who never left Africa at all have one to three percent neanderthal DNA, proving interbreeding. ANd yes, we did go to the moon. What century were you born in?
@C. Michael People didn'tlive longer, they lived shorter lives. Today's science and modern medicine along with better hygeine and nutrition have lengthened our life spans.
@C. Michael yes because there are beacons , mirrors and other measurements equipment placed on the Moon, that you can pick up on Earth. Who placed them on the moon?
as soon as she said we weren't human.....
Lovely exposed explained !
the centering measurements of the pelvis are taken from?
She never answered the fundamental question: Why are humans the only animal to lose our hair? If her hypothesis is true, then all animals evolving in the same environment would lose their hair.
She pointed out that other animals have different mechanisms for temperature control and great apes don't.
No one knows for sure, but the main theory is because we are runners. We have extreme running endurance. Only horses and dogs can match us in being able to run 30 to 100 miles non stop. Most other animals don't even come close. Because we evolved that ability, in a hot Savannah environment, we had to find an efficient way to cool. First losing hair, than sweating.
Losing our hair and changing exclusively to sweat glands for cooling means we must have had access to lots of freshwater. Australopithecus Africanus probably lived near water so I believe in the aquatic ape theory. Following the coast and rivers and on to the Savanah seems logical. We had millions of years to evolve so we would not have stayed in one environment.
We are endurance runners, like dogs and horses, but dogs and horses developed different thermo regulation methods like huge nostrils, panting and being close to the ground or more compact. Our thermo regulation developed differently.
Watched all of it
The speaker dismisses skin cancer and instead focus' on folate, but completely overlooks skin burn. Anyone with fair skin knows that it is simply impossible to spend all day in the sun in tropical Africa without severe sunburn (unless you have modern sunscreen lotion) which without modern medicine could even be life threatening. Certainly it severely restricts activity in for much of the day. On the other hand the evidence of Europeans in Africa dying of folate deficiency or having significantly higher rates of birth defects seems scarce.
I love to listen to human history.
This is not our "history", and her conclusions are laughable absurd.
Very wide n deep, she goes above n beyond, this lecture is a$ 100k to1mil value because she exposes lot of complex yrs of research where she gave science researcher answer to what they're waiting for, let they pay 10k 100k +1ml n she need to protected .
This is real knowledge as compared to youtubers without degrees just blasting ignorance
I may not agree with everything you say, but. You are one of the best lecturers that I have watched. I totally enjoy your fact based no nonsense, clear and concise lectures.
I have watched several of her videos. Very impressive. However, facts and data can and is (not necessarily by Jablonski) manipulated or adjusted (sic). For example the global warming alarmist and Climate Gate 1 and 2 etc.
Mulinaster we all rely on info provided by others. Most are honest, truthful and accurate. However, a number will be dead wrong, misunderstood or flat out lying to serve their own self interest.
@Robert Bigott, you are caught up with politics. The truth is, global warming is real and was predicted ever since 1900s. You saw people using it like bullets for politics (in recent decades), and you distrust it, but it is still the truth. I've heard about it (in 1990s), about the warming, even before the denials & politics. It is real.
Of course anyone could predict global warming in the 1900's! We just left the "Little Ice Age". Which way would you anticipate temperature to go. For the record temp increased until 1940 then it decreased until 1978, rebounded until 1998 and then it has basically flat lined or showed little rise since then.
In the mid and late 70's all the national (USA) alarmist Ragazines (TIME and others). warned us of the coming ice age. Check out TIME's issues of 3 Dec 73, 31 Jan 77, and Apr 77. All describe The Big Chill, the pending ice age; and how to prepare. these are the same scientific alarmist guru types who now claim catastrophic global warming.
Xponen, the oft claimed scam of 97% is a farce. 31,487 mostly US scientist (9,000 + PhD's) signed the Kyoto Petition Project all opposed to the Kyoto Accord. If those 31,487 scientist are the 3% then please show me the one million alarmist scientist.
As far as weather extremes, please note 1936 is the hottest year on record, worst droughts occurred in the 1930's and 1950's; and 1954 had 3 storms worst then "Sandy'.
Mulinaster , Xponen mentioned the 100 year (since 1900s). That was the basis of my comment.
May I suggest that you watch videos from HEARTLAND INSTITUTE and others. Besides the numerous PhD's narrated videos, notable videos by by famous and respected individuals Burt Rutan, (Space Ship 1, Voyager); Patrick Moore (Co-founder Greenpeace); and John Coleman (Meteorologist, founder of the Weather Channel).
Only idiots think that the global warming is fake.
So you think that the huge amount of carbon we release by burning fossil fuels won't make any damage to our earth?
Is it okay to for us to burn down our forest for farms?
I live in Indonesia, most of our forest have been burned down for palm oil.
That is the difference between the climate change thousand or millions of years ago, with the climate change we are facing now.
In the past, it was all natural, now it's man made. Huge difference.
It's not just about global warming, but global disaster.
Very very inter4sting
Fascinating! My mum is Scottish and Im 10 mins to start burning in southern Canada. Glad we don’t live even further south 😂
Then why do horses have fur?
"The History of Naked Sweaty and Colorful Skin" Is it permitted to upload this type of thing to the Ootoob ?
Is that a "political correctness" jibe, if so, you shouldn't be such a wilting lily, it is barbarism to protect the right to abuse (Ad Hom) others. Lol.
Great talk! Goddamn fly.
And that my friend is called Science .
16:24 Sweat glands and hair follicles, bmp protein.
Great lecture! Although it is very important to remember Evolution is just a theory, there still is no conclusive evidence, or "The Missing Link".
That you even exist is "just a theory". If this lecture, on it's own, does not convince you, then you are just being deliberately obstructive.
What about Neanderthal people? I thought is was through the breeding with Neanderthal that early humans obtains the physical traits of lighter skin.
I think the colors of human skin aren't colorful enough.(except people who artificially color their skin, it seems there should be more variety of natural skin tones and patterns).
I always knew this was the case, but her explanation of WHY it was so - is simply stunning! I wonder now, about the difference in eye shape over the world historically. Also, vitamin d3 is very important in immune system function and i see that African countries or rather- countries with darker skinned populations - seem to have less incidence of covid-19 - but i need to check the stats again to see if it has remained so.
I must have missed it, but I thought the consensus for Euro white skin was that it was a recent (
You've been fed a "Biblical" view of humanity and history. Religions want you and your money and compliance. This is evidence based science and some extrapolation.
No really, I though it was an adaptation from peoples long term migration past the Tropic of Cancer amd people migrated from Africa about 150,000 years ago and from the equator region after that.
@@irvingkurlinski
How is his comment religious at all???
In my country the old name for ricketts is "the English disease" since they had a lot of it.
Rickets was not common in the UK until the industrial revolution. The combination of daylight hours being spent working in factory's. Along with the burning of coal causing a haze in the local atmosphere, Created the condition to cause rickets in the UK. Rickets is most likely to occur in childhood. That is when vitamin D is used the most. Building bone is vitamin Ds main function. People in modern times have children's drinks are vitamin D fortified.
Pattern baldness is muted in the female in a seemingly attractive way.
Although skin cancer may typically affect people later in life and thus not greatly impact reproduction, sun burn is a major problem for light skinned people living in the tropics, even with modern clothes. The harmful effects of sunburn alone are sufficient to explain the need for dark pigmentation.
Timothy Whitehead So tan
Yeah, go tan Tim.
Im here for an Anthropology class, its 2021 the year of the Pandemic-USA Los Angeles
The evolution of skin color is more complicated than this, but the main driving force was because of winter. This video explains why:
ruclips.net/video/t42EsBwnlSY/видео.html
I find my long beard has a cooling effect on neck. If I walk fast or run, the air moving through my beard and it feels cool. Can someone study weather beards cool the the arteries of the neck? Maybe men kept it for sexual distinction and for cooling.
It's definitely a possibility.
I'm pretty sure your interpretation is "backwards". Your beard keeps your neck Warmer than the surrounding skin that's exposed. So when you move, the air passing through "cools" your neck to the level of your surrounding skin, not less then. No different than when you're wearing a jacket in a warm room. When you take it off at first you feel the cool until you acclimate to it.
Wookiemonsterfreak beards are for holding the leftover lunch apparently-duh.
Beards were a survival advantage because males with beards always had reserves of food on them and the males who didnt have beards starved 😄
I love this woman, a great scientist. This is the scientific answer and alternative to racism that should not exist in modern times and that all humans need to hear. It is refreshing to restate that the black African human is the first and original human being on the planet who gave birth to the other so-called races.
I always assumed that humans started off as very dark and somehow paled since we started in Africa. I don’t think anyone thinks of us as different species. People think different races which I disagree with. We should all just be humans.
@@katiekat4457 With interbreeding with Neandertals we were able to dump the melanin before it caused problems.
@C. Michael nope, you are wrong and delusional!
"When humans are living in high latitudes...people can only sustain year-round habitation if they have maximally depigmented skin." Eskimoes (Inuit, Yupik, Aleut, and probably some other related Asian peoples) do not have extremely pale skin, and, they cover their bodies with clothing. Nevertheless, they live in the far north. Utqiagvik, also known as Barrow, Alaska, at 71 degrees north, has been home to native people for at least 500 years. Likewise, in Tierra del Fuego there are aboriginal people whose skin is not extremely pale. OK, vitamin D diet. Still, it would seem there should be a problem.
I cant remember wjere but that is addressed in depth in other videos, If I remember right she adresses it more in one of her videos too
You have to know that people had all kinds of clothing before clothes were soon they certainly used laces for generations and generations.
At last!
Beautiful talk, but this is the old anthropocentric view of human evolution, e.g. savanna mammals don't sweat (salt & water are scarce there), and are not naked. For a biological view of human anatomy, google e.g. "coastal dispersal Pleistocene Homo 2018 biology vs anthropocentrism".
the woman is an Anthropologist. Are you just stupid or not paying attention?
Here's Part 2 of Dr Jablonski's talk: ruclips.net/video/tbbwA7XhaZ8/видео.html
Pani Jablonska.
Horses sweat and snd have hair. Explain that with your hypothesis.
the woman isn't lecturing on "horses". pay attention in class.
We're not all the same