Let’s take this up a level. Dr. Chris McKay is a planetary scientist at NASA’s Ames Research Center who searches the solar system for microbial life. Dr. McKay is also active in discussions of bioethics, Mars colonization, and terraforming. We spoke about the search for life on Mars and how it can inform our thinking about life, biodiversity, and ethics on Earth. You can expect the themes of biocentrism and anthropocentrism to rear their heads again, making Dr. McKay’s conversation an interesting contrast to Jan Lundberg’s biocentrism.