Many climate scientists argue we’ve passed the point of being able to slow down Co2 emissions that contribute to greenhouse gasses. A few advocates for mammoth scale geo-engineering to alter the earth’s climate. While geo-engineering is considered drastic and controversial, a new proposal is to engineer human beings to be more energy efficient… sounds far-fetched? Matthew Liao, professor of philosophy and bioethics at New York University is lead author of “Human Engineering and Climate Change”. Puts forward ideas on making future generations shorter, smarter and more vegetarian and will appear in the forthcoming issue of Ethics, Policy, and the Environment.