A genomic entrepreneur’s guide to the coming revolution in biology raises troubling questions about ethics and safety A genomic entrepreneur’s guide to the coming revolution in biology raises troubling questions about ethics and safety T he prophet Ezekiel once claimed to have seen four beasts emerge from a burning cloud, “sparkling like the colour of burnished brass”. Each had wings and four faces: that of a man, a lion, an ox and an eagle. Similarly, a creature called Buraq, something between