Investigators reported in Geology last week that the environmental variability suggested by the geochemical record of Lake Magadi is associated in time with mammal species turnover and the first appearance of Middle Stone Age technology in the southern Kenya Rift between 500,000 and 320,000 years ago.
The investigators drilled Lake Magadi as part of the Hominin Sites and Paleolakes and collected deep sediment cores from lake basins in the East African Rift.
