Mundo Canhoto

Discoveries about the world's 708 million left-handers.While the reasons for left-handedness still largely remain a scientific mystery, neuroscientists work hard to understand this fascinating phenomenon.Here are some recent scientific findings about left-handedness you might not have heard of, yet. 1. There are approximately 708 million left-handers in the world.In a…

What makes a chimpanzee left-handed--nature or environmental influences? Mostly nature, according to a recent study of chimp mothers and infants. That result refutes past animal research, which suggested that behavioral reinforcement and other external factors largely determine animals' hand--or paw--preferences. In contrast, this study from Emory University's Yerkes Regional Primate…