Tag Archives: AMH

Rare human Y-chromosome found to have a common ancestor pre-dating AMH

Analysis of an extremely rare African American Y chromosome pushes back the time of the most recent common ancestor for the Y chromosome lineage tree to 338,000 years ago and pre-dating the assumed arrival of AMH by some 100,000 years. Continue reading

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The origins of hominins eating meat and plants

One recent paper dates the eating of grasses by Australopithecus bahrelghazali to about 3 -3.5 million years ago ( about 1 million years earlier than previously thought) while another paper dates regular meat eating to about 1.5 million years ago. Continue reading

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What led humans to counting and when?

I speculate that the need to communicate to others lies not only behind speech but also behind the development of counting. I further speculate that the increasing complexities of co-operation and their requirements for communication was what drove the parallel – and inter-linked – development of speech and numerology starting some 150,000 years ago. Continue reading

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