Australopithecus have found 20 stones shaped by early humans using 'simple techniques ' close to the west shore of Lake Turkana in Kenya . The tools are thought to be 500,000 years older than the first Homo species . They are also 700,000 years older than other stone tools found previously . Scientists say it could reshape ideas about how our own species evolved .
Archaeologists have found 20 stones shaped by early humans using 'simple techniques ' close to the west shore of Lake Turkana in Kenya . The tools are thought to be 500,000 years older than the first Homo species . They are also 700,000 years older than other stone tools found previously . Scientists say it could reshape ideas about how our own species evolved .