That “intermediate” period is fascinating-indicating an unknown type of cultural/technological change (seemingly a loss)-but that it can be recognized for ~4,000 years! Any type of environmental influence lasting for 4,000 years is food for thought: are we in the midst of such a time period? Or, perhaps on the cusp of a long-term change that we are bringing about ourselves? Hmmm 🤔
At 19:00 min the graphs are very interesting for the time at around 15ky BP to 12ky BP. Compare these findings with the North American Ice Sheet decrease (Younger dryas period) probably triggered by tectonically induced lava flows beneath the western ice sheets.
Regarding the grey layer: imagine most of of your food got nearly extinct (estimates of 50% of larger wild animals beyond body mass beyond 100 pounds worldwide; up to 100% in todays USA) caused by sudden large scale fires, environmental changes etc. then you need to change your food source to survive. So the change to wild plants and small animals seems plausible to me. I always thought that the Younger Dryas events in North American ice sheets hadn't affected the African continent. Your findings might proof otherwise, e.g. that the northwestern African continent got massively affected also.
That “intermediate” period is fascinating-indicating an unknown type of cultural/technological change (seemingly a loss)-but that it can be recognized for ~4,000 years! Any type of environmental influence lasting for 4,000 years is food for thought: are we in the midst of such a time period? Or, perhaps on the cusp of a long-term change that we are bringing about ourselves? Hmmm 🤔
At 19:00 min the graphs are very interesting for the time at around 15ky BP to 12ky BP. Compare these findings with the North American Ice Sheet decrease (Younger dryas period) probably triggered by tectonically induced lava flows beneath the western ice sheets.
Regarding the grey layer: imagine most of of your food got nearly extinct (estimates of 50% of larger wild animals beyond body mass beyond 100 pounds worldwide; up to 100% in todays USA) caused by sudden large scale fires, environmental changes etc. then you need to change your food source to survive. So the change to wild plants and small animals seems plausible to me. I always thought that the Younger Dryas events in North American ice sheets hadn't affected the African continent. Your findings might proof otherwise, e.g. that the northwestern African continent got massively affected also.
The idea of a species emerging separately in different locations is ridiculous.
7:00 "homo sapiens may have evolved independently"
This is old news.