Emery,

I think hairloss amongst indigenous populations can be a genetic/race thing and not just due to the weather.
Similar to having body hair or not.
But there must be lifestyle & environment issues too because hairloss amongst women is on the increase in the Western World.

Thanks for clearing up the picture confusion.
I heard a really interesting/unbelievable fact yesterday:

There are more English speaking people in China than there are in the USA!!