Our bodies are a work in progress. For instance, many people could safely remove their little toe without having any effect on walking or balance. The appendix plays a role in keeping gut bacteria safe when you’re sick with food poisoning, but it probably had a more active role in our bodies long ago. Gallbladders store bile for breaking down fat, but plenty of people can get by without one. And while our wisdom teeth are just as useful as the rest of our molars, a lot of people need them to come out before they completely emerge. (more…)
