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A team of 45 scientists from 14 different countries led by Professor Tim White from Berkeley University has uncovered and assembled three fossilised skulls from Ethiopia that provide the oldest record of modern humans. The fossils give strong support to what is known as the Out of Africa theory: that humans first evolved in Africa and then migrated to other regions and ultimately the entire globe.The landmark discovery was made public in the scientific journal Nature on June 12. The find was made in 1997 in an arid valley close to the Middle Awash River near the village of Herto, 225 kilometres northeast of Addis Ababa. The three skulls—two adults and one child—were so fragmented that it took five years to piece them together and were dated at 160,000 years old using the Argon-Argon method. The dating was quite precise as the fossils were found between two layers of volcanic ash.
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