From the Wikipedia entry on Transhumanism:
“The term ‘transhumanism’ is symbolized by H+ or h+ and is often used as a synonym for ‘human enhancement’. … The transhumanist vision of a transformed future humanity has attracted many supporters and detractors from a wide range of perspectives. Transhumanism has been described by one critic, Francis Fukuyama, as the world’s most dangerous idea, while one proponent, Ronald Bailey, counters that it is the ‘movement that epitomizes the most daring, courageous, imaginative, and idealistic aspirations of humanity’.”
(Emphasis mine.) I stumbled on this late last night after watching Gattaca.