TED again! This time, bioethicist Paul Root Wolpe says it is time to question bioengineering, with which I would quibble only so far as to point out that the statement "it is time" uttered at a particular moment in time strongly implies that the proposed behavior would not have been appropriate, yet, at any time earlier than the moment of utterance.
He gives a powerful presentation, and asks a litany of good questions which deserve attention, but it is long past time for the proposed questions: we already are a callous mash-up of industrial postmarket experiments, America the Risk Factory.
That said, look upon these works, ye mighty, and tremble!