New research suggests upright walking and brain growth shaped human right-handedness. This evolutionary process began when hands were freed from locomotion duties. As hominins evolved, right-hand preference grew stronger with increasing brain size. Larger brains encouraged hemisphere specialization, making consistent hand use more common. This explains why most humans favour their right hand over others. Source link Post Views: 9 Post navigation A silent coral reef came back to life after scientists played recordings of healthy reefs underwater | Hawaii: In 1955, Hawaii released a cannibal snail to control another invasive snail, but the predator instead helped push the islands’ rare native tree snails toward extinction
