Today, we stand at another critical juncture. The mapping of the human microbiome, the emerging field of epigenetics, and other biological phenomena are shattering our understanding of identity. Biologists are discovering that non-human
life is essential to our survival. The microbiome influences our digestion, immune response, and even psychological health. It is akin to a newly discovered organ. And with epigenetics, scientists are discovering that behaviors and experiences from past generations can affect gene expression in our bodies today, putting us in a new, perhaps uncomfortable, continuum of responsibility across generations.