As genetics allows us to turn the tide on human disease, it's also granting the power to engineer desirable traits into humans. What limits should we create as this technology develops?

The genetic engineering of human beings has been a dream and a nightmare since scientists first speculated about it a century ago. Futurists and transhumanists have long thought that genetic ...

However, a “trellis” model might be more appropriate. Aa Aa Aa The study of human genetics has added a new layer of evidence to the story of how human beings evolved and migrated on Earth.