__UPDATE__: All my speculations are likely to be not possible. There are parts of the Y chromosome essential for spermatogenesis. So what I speculate is fiction.

Men are obsolete. They are not needed anymore to sustain life on this planet. Sounds science fiction?

No, I am not talking about cloning, and making exact replicas. I am talking about women making sperms with an X chromosomes so they could reproduce and make more females. The sperm could be from one woman and the egg from a different one.

We are not there yet but the BBC has [this story|http://news.bbc.co.uk/2/hi/health/6547675.stm#graphic]:
;: ''Scientists say they have successfully made immature sperm cells from human bone marrow samples.''