Biophilia is a term popularized by Harvard University myrmecologist and conservationist E.O. Wilson to describe the extent to which humans are hard-wired to need connection with nature and other forms of life. We need nature in our lives more than ever today, and as more of us are living in cities it must be urban nature. Biophilic cities are cities that contain abundant nature; they are cities that care about, seek to protect, restore and grow this nature, and that strive to foster deep connections and daily contact with the natural world. Nature is not something optional, but absolutely essential to living a happy, healthy and meaningful life. The Global Biophilic Cities Network is devoted to understanding how cities can become more biophilic, more full of nature, and to telling the stories of the places and people working to creatively build these urban-nature connections.