(14.März 2012) The modifications discussed included: giving people drugs to make them have an adverse reaction to eating meat; making humans smaller via gene imprinting and „preimplantation genetic diagnosis“; lowering birth-rates through „cognitive enhancement“; genetically engineering eyesight to work better in the dark to help reduce the need for lighting; and the „pharmacological enhancement of altruism and empathy“ to engender a better „correlation“ with environmental problems.