Evolution is always churning along. Evolution, after all, is just change over time and natural selection. … So whether we like it or not, evolution is going on, but it’s going on at a very slow pace. And really what’s a more dominant form of evolution today is cultural evolution: It’s how we learn and use our bodies and interact with each other based on learned information, and that’s also a kind of evolution. It’s not Darwinian evolution, it’s not biological evolution, but it affects our bodies. We’re evolving — we’re evolving slowly through natural selection and rapidly through cultural evolution, and we need to think about those interactions as we plan to use our bodies better.
— Daniel Lieberman speaks to Fresh Air about how evolution is still pertinent today