Dispersal out of Africa may have occurred during arid period
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Dispersal out of Africa may have occurred during arid period
Subject: History
Section: Msc
Why in news: Recent Study Published in the Journal Nature suggest the most recent widespread migration of human out of Africa takes place less than 1,00,000 years, may have taken place during Arid period following Toba super volcano eruption in Indonesia
More About News:
- It was earlier believed that dispersal of Human out of Africa occurred during Humid period as it creates a Green corridor and facilitates the movement of people
- Period of Aridity are thought to have constrained human movement and creates food insecurity
New Evidence in support:
- Near Shinfa River Evidence Human presence in the form of Chipped stone from tool manufacturing and Animal remains and chemical analysis of Glass Shards found they were from Toba Super eruption (74000 years ago)
- Evidence from Ostrich Egg-Shells and fossil mammal teeth indicates that the environment at that time was particularly Arid
New Finding:
- With Increasing AridityRiver Shrank in the dry season so fish were trapped easily in water holes by using bow and arrows
- Adaptive Forage along with Dry season Waterhole would have transformed seasonal river into blue highways , potentially facilitating out-of Africa dispersal
- Behavioral flexibility documented at this site helped these humans to survive aftermath of the super eruption and may play critical role for modern human to prosper in the diverse climates and habitats across the world