Rather then muss up Medusa's thread in Cat General Ill post this here reguarding spaying humans.

President Obama's "science czar," John Holdren, once floated the idea of forced abortions, "compulsory sterilization," and the creation of a "Planetary Regime" that would oversee human population levels and control all natural resources as a means of protecting the planet -- controversial ideas his critics say should have been brought up in his Senate confirmation hearings.
Source.