Archaeologists have found a piece of a stone axe 35,500 years old on sacred Aboriginal land in Australia, the oldest object of its type ever found. The shard of stone was found in Australia's lush and remote far northern reaches in May, and has marks that prove it comes from a ground-edge stone axe. The discovery was made by a Monash University researcher and a team of international experts. The previous oldest ground-edge axes were 20,000 to 30,000 years old, and the conventional belief was...