Today, about one-tenth of the world’s population are southpaws. Why are such a small proportion of people left-handed -- and why does the trait exist in the first place? Daniel M. Abrams investigates how the uneven ratio of lefties and righties gives insight into a balance between competitive and cooperative pressures on human evolution.
• Eco-friendly, high-quality, minimal waste
• 100% ring-spun cotton (heather colors contain polyester)
• Baby-knit jersey
• Shoulder-to-shoulder taping
• Cover stitched and hemmed sleeves