FRIDAY, 8 JULY 2011
![From: http://commons.wikimedia.org/wiki/File:Quartzite_3.jpg](https://bluesci.co.uk/wp-content/uploads/2011/07/600px-Quartzite_3-300x292.jpg)
These findings were made by the scientists in Hollow Rock Shelter, South Africa. They suggest that acquiring this new spearhead technology took a long time, and called upon more complex cognitive functions than was the practice for humans at the time [1]. Over generations, this gave rise to the brain developing new abilities; on top of social life, working memory was also enhanced. Further research is being conducted in the same cave where the excavations were carried out [2].
Written by Ayesha Sengupta