Dr Paul Root Wolpe is the senior bioethicist at NASA and a pioneer in the field of neuroethics. Peering into his children's and grandchildren's future, he sees an America that rewards competitiveness and productivity over relationship-building, and suspects that future generations will face intense pressure to enhance their minds and bodies in unhealthy ways. If parents already use Ritalin to give kids a competitive edge, what will happen when we can genetically engineer their talents?