Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

Why Did People Become White?
Live Science ^ | 9/2/2009 | Heather Whipps

Posted on 09/02/2009 12:47:20 PM PDT by SeekAndFind

Humans come in a rainbow of hues, from dark chocolate browns to nearly translucent whites.

This full kaleidoscope of skin colors was a relatively recent evolutionary development, according to biologists, occuring alongside the migration of modern humans out of Africa between 100,000 and 50,000 years ago.

The consensus among scientists has always been that lower levels of vitamin D at higher latitudes — where the sun is less intense — caused the lightening effect when modern humans, who began darker-skinned, first migrated north.

But other factors might be at work, a new study suggests. From the varying effects of frostbite to the sexual preferences of early men, a host of theories have been reviewed.

Vitamin D plays an important role in bone growth and the body's natural protection against certain diseases, and the inability to absorb enough in areas of less-powerful sunlight would have decreased life expectancies in our African ancestors. The further north they trekked, the more vitamin D they needed and the lighter they got over the generations, due to natural selection.

This explanation accounts for the world's gradients of skin color traveling south to north, the prevalence of vitamin D deficiency among African immigrants to higher latitudes, as well as the relatively darker skin of Canada's Inuit peoples, who have good levels of vitamin D despite living in the Arctic, due to their diet rich in oily fish.

(Excerpt) Read more at livescience.com ...


TOPICS: Science; Society
KEYWORDS: agriculture; animalhusbandry; color; godsgravesglyphs; health; helixmakemineadouble; huntergatherers; race; vitamind
Navigation: use the links below to view more comments.
first 1-2021-4041-6061-80 ... 121-138 next last
For that matter -- what was the color of the first man and woman ?
1 posted on 09/02/2009 12:47:20 PM PDT by SeekAndFind
[ Post Reply | Private Reply | View Replies]

To: SeekAndFind

An aversion to rap music?


2 posted on 09/02/2009 12:48:59 PM PDT by PBRSTREETGANG
[ Post Reply | Private Reply | To 1 | View Replies]

To: SeekAndFind
For that matter -- what was the color of the first man and woman ?

Probably ruddy - that's the literal meaning of the Hebrew 'dm

3 posted on 09/02/2009 12:48:59 PM PDT by Titus Quinctius Cincinnatus (We bury Democrats face down so that when they scratch, they get closer to home.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SeekAndFind
Why Did People Become White?

So we could oppress non-whites and steal their oil??

4 posted on 09/02/2009 12:49:19 PM PDT by skully (How much evil can an evil monger monger; if an evil monger can monger evil??!!)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SeekAndFind

Because they wanted to play golf. :)


5 posted on 09/02/2009 12:49:33 PM PDT by cvq3842 (Countless thousands of our ancestors died to give us the freedoms we have today. Stay involved!)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SeekAndFind
Why are middle easterners considered "white?"

Why the fudge do moronic Americans use the 19th century junk-science term "caucasian."

Why do we, alone among nations, categorize "hispanic" as a separate racial category?

Why do retards in the New York area refer to Latinos as "Spanish."

6 posted on 09/02/2009 12:49:34 PM PDT by Clemenza (Remember our Korean War Veterans)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SeekAndFind
occuring alongside the migration of modern humans out of Africa between 100,000 and 50,000 years ago.

Not so fast. There is growing evidence that the Out of Africa was just one more Liberal brain fart. Modern man seems to have evolved separately in Europe, and possibly Asia as well, from Homo erectus.

7 posted on 09/02/2009 12:49:39 PM PDT by pabianice
[ Post Reply | Private Reply | To 1 | View Replies]

To: SeekAndFind
Why Did People Become White?

So they could move to the 'burbs and complain about people bringing down the property values.

8 posted on 09/02/2009 12:49:39 PM PDT by Titus Quinctius Cincinnatus (We bury Democrats face down so that when they scratch, they get closer to home.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SeekAndFind

to read later


9 posted on 09/02/2009 12:50:42 PM PDT by Mrs. Don-o (Person of Pallor)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SeekAndFind

10 posted on 09/02/2009 12:50:53 PM PDT by earlJam
[ Post Reply | Private Reply | To 1 | View Replies]

To: Titus Quinctius Cincinnatus
Probably ruddy - that's the literal meaning of the Hebrew 'dm

Is that in the Bible ? What chapter and verse ?
11 posted on 09/02/2009 12:52:15 PM PDT by SeekAndFind
[ Post Reply | Private Reply | To 3 | View Replies]

Comment #12 Removed by Moderator

To: SeekAndFind
'dm = Adam
13 posted on 09/02/2009 12:52:59 PM PDT by Titus Quinctius Cincinnatus (We bury Democrats face down so that when they scratch, they get closer to home.)
[ Post Reply | Private Reply | To 11 | View Replies]

To: earlJam

Coffee spit on screen alert!!! :)


14 posted on 09/02/2009 12:53:10 PM PDT by cvq3842 (Countless thousands of our ancestors died to give us the freedoms we have today. Stay involved!)
[ Post Reply | Private Reply | To 10 | View Replies]

To: SeekAndFind
Well, if you believe in evolution, then it occurs to me that the earliest humans had white skin at the very beginning simply for the reason that animals with fur tend to have light skin as there is no need for such a high melanin content.

As the earliest humans lost the need for hair that covered ones entire body, our skin gradually darkened to protect us from the sun.

15 posted on 09/02/2009 12:54:43 PM PDT by TheThinker
[ Post Reply | Private Reply | To 1 | View Replies]

To: SeekAndFind

hmmm...maybe by taking more Vitamin D my legs wouldn’t be so white....


16 posted on 09/02/2009 12:55:31 PM PDT by Aria ( "The US republic will endure until Congress discovers it can bribe the public with the people's $.")
[ Post Reply | Private Reply | To 1 | View Replies]

To: PBRSTREETGANG
I always thought it was because God took us out of the oven too soon. The next batch he burnt black. The third batch came out a beautiful tan and was just right. At least this is how my Indian anthropology professor explained it.
17 posted on 09/02/2009 12:55:44 PM PDT by dog breath
[ Post Reply | Private Reply | To 2 | View Replies]

To: SeekAndFind

They needed to camouflage themselves when hunting in snow and they didn’t know how to tan hides and dye them white yet, so they simply told their bodies to do the evolution thing and turn white. There, logical explanation for everything.


18 posted on 09/02/2009 12:56:01 PM PDT by calex59
[ Post Reply | Private Reply | To 1 | View Replies]

To: SeekAndFind

Ham, Shem and Japheth


19 posted on 09/02/2009 12:57:15 PM PDT by US Navy Vet
[ Post Reply | Private Reply | To 1 | View Replies]

To: SeekAndFind
Why Did People Become White?

Just so others could try and make us feel guilty. (they failed with me.)

20 posted on 09/02/2009 12:57:36 PM PDT by OB1kNOb (Extreme right-winged mob terrorist astroturfing bitter clinging racist birther evilmongering wingnut)
[ Post Reply | Private Reply | To 1 | View Replies]


Navigation: use the links below to view more comments.
first 1-2021-4041-6061-80 ... 121-138 next last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson