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re: First human ancestors came from Europe not Africa 7.2 million-year-old fossils indicate
Posted on 5/23/17 at 5:10 pm to DawgfaninCa
Posted on 5/23/17 at 5:10 pm to DawgfaninCa
The idea that humans originated in sub-saharan africa and spread from there never made much sense to me. The sahara desert is nearly the size of the united states. No primitive people were crossing that desert to populate other lands. They would have been cooked and died.
12
Posted on 5/23/17 at 5:13 pm to HailHailtoMichigan!
quote:
The idea that humans originated in sub-saharan africa and spread from there never made much sense to me. The sahara desert is nearly the size of the united states. No primitive people were crossing that desert to populate other lands. They would have been cooked and died.
Was that desert even there back then? I know much of that area used to be good land.
Posted on 5/23/17 at 5:14 pm to HailHailtoMichigan!
quote:
The sahara desert is nearly the size of the united states.
The Sahara desert as we know it today developed 2 to 3 million years ago. There is strong evidence the climate there was at the minimum semi-arid. Seeing as these fossils predate the desertification of that desert, it isn't relevant to this particular discovery.
Posted on 5/23/17 at 5:15 pm to HailHailtoMichigan!
The Sahara wasn't always a desert like you know it today. There have been periods where it was lush and full of rain as late as 10,000 years ago.
I'm not saying people came from Africa, Europe or outer space. Just that millions of years ago the climate was very different in varied places.
I'm not saying people came from Africa, Europe or outer space. Just that millions of years ago the climate was very different in varied places.
Posted on 5/23/17 at 5:15 pm to HailHailtoMichigan!
quote:
The idea that humans originated in sub-saharan africa and spread from there never made much sense to me. The sahara desert is nearly the size of the united states. No primitive people were crossing that desert to populate other lands. They would have been cooked and died.
The desert formed about the same time as the first hominids developed.
And this story is very interesting but doesn't mean we can't trace our roots back to africa. Just b.c this hominid formed in greece region, doesn't mean that homo ergastor did.
source: Wife volunteers as evolution educator, although her speciality isn't hominids.
Posted on 5/23/17 at 5:17 pm to HailHailtoMichigan!
quote:
The sahara desert is nearly the size of the united states. No primitive people were crossing that desert to populate other lands. They would have been cooked and died.
They say it wasn't a desert back then, but rather a forest. Anyways, this evidence doesn't dispel the Out of Africa theory, it merely suggests that our ancestors were in Europe much sooner than previously thought. Big difference.
This post was edited on 5/23/17 at 5:19 pm
Posted on 5/23/17 at 5:36 pm to HailHailtoMichigan!
quote:
The idea that humans originated in sub-saharan africa and spread from there never made much sense to me. The sahara desert is nearly the size of the united states. No primitive people were crossing that desert to populate other lands. They would have been cooked and died.
That's because the Sahara Desert wasn't formed until about 7,000 years ago. Humans had long left Africa before then.
Posted on 5/23/17 at 5:40 pm to HailHailtoMichigan!
quote:
The sahara desert is nearly the size of the united states. No primitive people were crossing that desert to populate other lands. They would have been cooked and died.
Was it a desert that long ago?
Posted on 5/23/17 at 5:50 pm to HailHailtoMichigan!
quote:
The idea that humans originated in sub-saharan africa and spread from there never made much sense to me. The sahara desert is nearly the size of the united states. No primitive people were crossing that desert to populate other lands. They would have been cooked and died.
But they could cross it heading south?
Posted on 5/23/17 at 5:52 pm to HailHailtoMichigan!
quote:
They would have been cooked and died.
You'd be surprised at how well our ancestors were able to adapt and thrive in different environments.
Posted on 5/23/17 at 6:04 pm to HailHailtoMichigan!
The Sahara was not desert until fairly recently geologically. It was grassland during the last ice age and for a while afterwards. Desertification did not become widespread until the early Egyptian civilizations had begun building mud brick mastabas. In fact, there was still enough water to traverse the Sahara on horseback as recent as the Roman wars with Carthage.
Posted on 5/23/17 at 6:30 pm to HailHailtoMichigan!
quote:
The idea that humans originated in sub-saharan africa and spread from there never made much sense to me. The sahara desert is nearly the size of the united states. No primitive people were crossing that desert to populate other lands. They would have been cooked and died.
1. the article is about beings that lived 7 million years ago.
nothing you would call human lived until a few hundred thousand years ago, probaby not even that. Neanderthals and the Denisovans were afoot.
if you look at the research closely, you do not see what you would call humans, several hundred thousand years ago. 1/3rd sized brains, for instance.
there were MANY hominids.
2. as for your climate issue, climate changed many times over the millions of years, as cycles like the movement of the Milky way, and within our galaxy changed too. Sun around the galaxy every 26,000, right?
the saraha probably did not appear until recently.
This post was edited on 5/23/17 at 6:31 pm
Posted on 5/23/17 at 10:15 pm to HailHailtoMichigan!
quote:
The idea that humans originated in sub-saharan africa and spread from there never made much sense to me. The sahara desert is nearly the size of the united states. No primitive people were crossing that desert to populate other lands. They would have been cooked and died.
Besides the aforementioned relatively recent desertification of the Sahara, there is far too much genetic diversity within sub-Saharan vis a vis the rest of the world to make anyone seriously think otherwise. The amount of genetic diversity within sub-Saharan Africa is exponentially larger than it is even between the rest of the world.
Plus, all of our closest meaningful genetic relatives are in Africa. That's pretty compelling all on its own.
This post was edited on 5/23/17 at 10:21 pm
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