Cultural evolution has vastly outpaced biological evolution. A baby born into this situation would flounder if it were not for brain plasticity, and schooling. Babies are born with biological predispositions, and they build on these as they learn from the culture around them. With schools, children can learn vast amounts of cultural knowledge in just a matter of years. This is how biological inclinations for language and numbers have been dramatically extended to create literacy and mathematics. In our globally interdependent world, we need to extend our biological inclination for care in an analogous way. Our brains evolved for a world where we lived in small clans and only needed to care for the people in these clans. Now, we live in an interconnected world in which our actions have ripples in a broader global matrix. We need to extend our biologically based inclination for care to peoples in all corners of the world. Schools can play a key role in nurturing this cosmopolitan ethic of care.