Transhumanism?
Wikipedia's short answer: "Transhumanism is a philosophical and intellectual movement which advocates the enhancement of the human condition by developing and making widely available sophisticated technologies that can greatly enhance longevity and cognition."
Mary Harrington takes the Enlightenment Humanism side with there's good but much wrong with it, including what the early Greeks warned about hubris.
Elise Bohan takes the Transhumanism side, agreeing we must be careful but overall man's re-engineering himself is a good thing.
Both agree that the Transhumanist Age began with the Pill. Oddly, Bohan cites CS Lewis's warning "Man’s conquest of Nature turns out, in the moment of its consummation, to be Nature’s conquest of Man." Oddly because if you read the longer quote he's talking about eugenics, which I think is the true origin.
You can skip opening statements, the first 29 minutes, to where discussion begins.