The human species, through the instrument of culture, has become the dominant force of planetary ecological change. Our adaptations have become maladaptive. Moreover, the human species as a whole now displays all four major characteristics of a malignant process: rapid, uncontrolled growth; invasion and destruction of adjacent normal tissues (ecosystems); metastasis (distant colonization); and dedifferentiation (loss of distinctiveness in individual components). We have become a malignant ecopathologic process. If this diagnosis is true, what is the prognosis? The difference between us and most forms of cancer is that we can think, and we can decide not to be a cancer.

- Warren Martin Hern, M.D., M.P.H., Ph.D.