Weaving cultural history and scientific exploration, The Left Stuff takes you on an adventure to discover the truth about why humans choose one hand over the other. From high-tech neuroscience labs to the rain forests of Africa to the bullpens of Major League Baseball, learn how societies and genetics encourage us to choose sides. Fascinating, provocative, and insightful, this is a engaging narrative of how modern science has put the power of understanding in the palms of our hands.