A piece of a 35,000-year-old ax head has been discovered in remote northern Australia. “It would have been ground, probably against a sandstone-based grinding stone. The hard grains of sand left little groves and they are large enough to see with the naked eye,” said Bruno David of Monash University. An excavation next to Boston’s […]

Figuring out how to craft stone tools boosted the brain power of early humans and paved the way for language, according to neuroscientist Aldo Faisal of Imperial College London. Areas in the right hemisphere of the brain become more active when more advanced stone tools are made. Some of these areas are also involved in […]