'Dryer, less predictable environment may have spurred human evolution'
Wednesday, October 10, 2018, 4:20 PM
A progressively drying climate along with unpredictable weather may have caused the evolution of anatomically modern humans, according to a study. Researchers studied lake sediment cores in the rift valley of East Africa, known for its rich source of human fossils. The larger brains of anatomically modern humans allowed human ancestors to adapt to the rapidly changing climate, they claimed.