Ross wrote:
I think all the men on earth vanished/died/were incapacitated, and the women of the DCU had to rescue them.
I've got it. Haven't read it in years, but some kind of space virus killed all the men on Earth. Only Superman was immune, and Lex Luthor also survived due to the fact that he had sealed himself inside that green & purple suit of armor. So all the superheroines had to try to help run the planet and maintain order. Some supervillainess had taken Kyle's power ring, and so the heroines teamed up, took it from her, and gave it to Barbara, since she was more worthy.
I won't spoil the rest of the story, but it involves using Superman's super-sperm to help repopulate the planet via mass invitro-fertilization.