The writing on the cave wall

[Artyom]

http://www.newscientist.com/article/mg20527481.200-the-writing-on-the-cave-wall.html?page=2

Given the fact that this story comes from the mainstream scientists and already has an impact on our picture of the prehistoric world I consider it's a very significant achievement. I think it would be great to compare this symbols map with the latest Human Genome Project data.

 

[pixelsmith]

No signs ever emerged in northern France, though. "For large periods of time the north was uninhabitable because of ice sheets coming and going, so there was less opportunity for culture to develop independently up there," says von Petzinger.

The Ice Age may have hindered the cultural revolution in the north, but elsewhere it could have been instrumental in furthering it. "People were forced to move south and congregate in 'refugia' during the last glacial maximum, 18,000 to 21,000 years ago, and it is at this time when we start to see an explosion in rock art," says Nowell. "One possibility is that they were using the signs to demarcate their territories."

This comment is Off topic or Cross topic if you will;
this is a good example of natural non human induced climate changes.

 

[jkoci]

This comment is Off topic or Cross topic if you will;
this is a good example of natural non human induced climate changes.

True. Here is a nice summary of the potential causes.

NOVA Online/Cracking the Ice Age/The Big Chill