derekmead writes "Forget CFLs, hybrid cars, and organic jeans. Buying our way out of climate change — even if it's green consumption — won't get us far. A new paper (PDF), published in Ethics, Policy, and the Environment by NYU bioethics professor S. Matthew Liao, poses an answer: engineer humans to use less. The general plan laid out by Liao is straightforward, ranging from using pharmacological behavior modification to create an aversion to meat in people, to using gene therapy to create smaller, less resource-intensive children. The philosophical and ethical questions, on the other hand, are absurdly complicated. The Atlantic also has a great interview with Liao, in which he talks about gene therapy and making humans hate the taste of meat."