No volcanic winter in East Africa from ancient Toba eruption.
The supereruption 74,000 years ago did not trigger major
environmental disruption that caused human populations
in East Africa to decline, say geoscientists.
University of Arizona, February 6, 2018
https://www.sciencedaily.com/releases/2018/02/180206151850.htm
https://uanews.arizona.edu/story/no-volcanic-winter-east-africa-ancient-toba-eruption
The paper is:
Chad L. Yost, Lily J. Jackson, Jeffery R. Stone, Andrew S.
Cohen. Subdecadal phytolith and charcoal records from