Why do we have five fingers and toes? It all goes back to our fishy ancestors. The answer to why we have five fingers and toes is surprisingly difficult to suss out. Breakthroughs, discoveries, and DIY tips sent every weekday. The popular nursery rhyme is an early childhood memory for many of us.

Why are most people right-handed? A mix of biology, environment, and evolution helps explain our rightie-dominated world. Around 85 to 90 percent of people are right-handed. Breakthroughs, discoveries, and DIY tips sent every weekday. Roughly 85 to 90 percent of people are right-handed, while just 10 to 15 percent are left-handed, and a small percentage are ambidextrous.