ABC (Australia) article and podcast that discusses how Aborigenes shaped the landscape of Australia before Europeans arrived.
similar findings have shown the americas were not untouched wildernesses, now was North America a pristine prarie with lots of Buffalo but a landscape of corn fields...and even the Amazon probably was a huge farm land in the days before the Europeans and their diseases arrived...
Pale skin was a genetic aberation
that began 10 thousand years ago. So why did it spread in certain
populations? Because of the high rate of maternal deaths from ricketts:
if you had pale skin, you absorbed more vitamin D. (The Eskimos ate seals and certain fishes whose oil contained the vitamin or ate cod...the story of cod liver oil and rickets prevention here. ).