It has not escaped my attention that of all of the drugs and medical procedures that have ever been, birth control (including IUDs) and abortion have the greatest potential to save the Earth. Right now, we face a terrible contradiction: Too Many People & Not Enough Planet.
As Peter Grey says in his latest essay*:
[W]e do not simply have peak oil, we have peak water, peak wood, peak rare earths, peak everything that is drawn into the maw of the inexorable algorithim of industrial culture and the inevitable wars and revolutions that resource scarcity produces.