![Gregory Stock: To upgrade is human](https://pi.tedcdn.com/r/talkstar-photos.s3.amazonaws.com/uploads/47ed752c-5a7b-4e10-947c-dab1fbd00aab/GregoryStock_2003-embed.jpg?h=200)
In this prophetic 2003 talk -- just days before Dolly the sheep was stuffed -- biotech ethicist Gregory Stock looked forward to new, more meaningful (and controversial) technologies, like customizable babies, whose adoption might drive human evolution.