The most severe population bottleneck

 

The most severe population bottleneck—the event where human ancestors came closest to extinction, with the smallest effective population size and the most dramatic reduction—occurred around 900,000 years ago (specifically between approximately 930,000 and 813,000 years ago).

 During this 117,000-year period, the breeding population dropped to about 1,280 individuals, representing a loss of roughly 98.7% of the ancestral population.

A 2023 genetic study (published in Science - Genomic inference of a severe human bottleneck during the Early to Middle Pleistocene transition by Wangjie Hu et al.) analysed modern human genomes and inferred that our ancestors' breeding population dropped to roughly 1,280 individuals (effective population size). This represented a crash from around 100,000 individuals, meaning about 98.7% of the ancestral population was lost. The bottleneck lasted for about 117,000 years before recovery, bringing the lineage perilously close to extinction.

 https://www.science.org/doi/10.1126/science.abq7487

https://www.nature.com/articles/d41586-023-02837-6

 

 While other bottlenecks have been discussed in human evolution (such as the Toba eruption theory at 75,000 years ago = 3 Great Years ago), the 900,000-year-old bottleneck is considered the most severe

 The eruption was a VEI 8 event (the highest rating on the Volcanic Explosivity Index), which is classified as "mega-colossal"

 

 

Any study that brings up OOA = rubbish. 

 

 

 

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